Cookie policy

Visitor using their laptop in the café at Osterley Park, Middlesex | © National Trust Images/Chris Lacey

Cookies are small files that collect information to help provide the best possible online experience for you. This page tells you what cookies are, how we use them and how you can control our use of cookies and similar technologies.

Cookies are small files that are placed on your computer, tablet or smartphone, by websites and apps that you use. They collect information to make websites work effectively, to help us improve the site, to provide functionality, such as remembering what you have put in your shopping basket and providing relevant marketing content. We use cookies and similar technologies to provide you with a functional website and a more personalised experience.

Cookies are sent back to the originating website on each visit, or to another website that recognises that cookie. Cookies are useful because they allow us to recognise the device you’re using and provide you with a better website experience.

Cookies do lots of different jobs, like letting you navigate between pages efficiently, remembering your preferences and counting the number of people looking at a website. They can also help to ensure that adverts you see online are more relevant to you and your interests. Cookies in themselves don’t identify the individual user, just the computer or mobile device you’re using, via a randomly generated identifying tag.

We also use cookies in some of our emails you can subscribe to receive. They help us to understand how you interact with our emails, for example, clicking through to our website, and are used to improve our future email communications.

Web beacons

A web beacon is a tiny invisible image placed within an email message that tells us whether you’ve opened an email, how often you’ve opened it and when, and which email software and web browser you used.

Link tracking

Our emails contain a number of hyperlinks, each of which has a unique tag. When you click on one of these links you’ll be automatically redirected to our mailing server which logs the click. From there, you’ll be redirected to the relevant page on our website. This process enables us to understand who has clicked through from an email to our website. We use this information to tailor future messages to you.

Cookies and email

If you’ve enabled images, cookies may be set on your computer or mobile device. Cookies will also be set if you click on any link within the email.
We use first and third party cookies for different purposes.

First party cookies are set by us, as the owner of the website or app, to enhance security and to improve our products and services for a better user experience.

Third party cookies are set on our website by an organisation other than us. These enable us to learn more about our customers, so that we can provide a more personalised experience, or in some cases for advertising.
There are many different types of cookie and we use them to enable activities on our website, app and within some email communications. We group these cookies as follows:

Essential cookies

These are cookies that are required for the operation of our website. They include, for example, cookies that enable you to log into secure areas of our website or to make a purchase.

We also use essential cookies to remember information you’ve entered into our join or donate forms, so that you can move between steps on the form or visit other pages without having to re-enter your information, all within a single website visit.

Functional cookies

These cookies are used to recognise you when you return to our website. This enables us to remember the preferences you’ve chosen. For example, we use functionality cookies to remember settings you’ve previously applied, such as layout and text size.

Performance cookies

These cookies are used to provide anonymous data to track how you interact with the website, and the number of visitors. This helps us to improve the way our website works, for example, by ensuring that you find what you’re looking for easily. We also use these to make sure the site is working properly and for testing different designs.

Marketing cookies

These cookies record your visit to our website, the pages you have visited and the links you have followed. We’ll use this information to make our website more relevant to your interests. These cookies allow us to target our advertising to you or to people similar to you, to measure the effectiveness of campaigns, or to exclude you from our advertising.

For example, a cookie set by a partner organisation may be used to exclude you from our membership ads on other organisations’ websites, if you have recently completed a membership purchase on our site. This enables us to target our advertising spend more efficiently. If you share an article using a social media sharing button, the social media site may record this.

First party cookies

The first party cookies that we use are listed in the table below:

Cookie name	Cookie category	Cookie author	Cookie purpose	Cookie duration
at_check	Performance	national trust .org.uk	Used by Adobe Target to check if the users browser supports cookies	Session
_tq_id.TV-***	Marketing	national trust .org.uk	TVSquared - Aids reporting of site visits and actions for analytical reporting to TV Squared.	2 years
channel Source	Marketing	national trust .org.uk	Used to attribute conversions to affiliate campaigns. Set to either "AW" or "Other"	Session
national TrustCpc Submiss ionId	Functional	national trust .org.uk	Records the submission of marketing preferences to aid Adobe Analytics	1 hour
klevu_ rs_klevu _15266 467488 307721	Functional	shop. national trust. org.uk	Records recent searches.	7 days
klevu_ cat_klevu _15266467 488307721	Functional	shop. national trust. org.uk	Records the product categories of recently clicked products.	7 days
klevu_ rcp_klevu _15266467 488307721	Functional	shop. national trust. org.uk	Records recently clicked products.	7 days
booking- reference	Functional	national trust .org.uk	Enable user to continue with an abandoned holiday booking if they want to	6 hours or cookie delete
cookie Splash Shown Once	Functional	national trust .org.uk	Makes sure the user only sees the NT splash screen on the home page once	Session only
save Place Waiting	Functional	national trust .org.uk	Saves the place favourited when returning from registration	3 days
cookie ShowFavou ritesHelp	Functional	national trust .org.uk	shows how to favourite places after favouriting for the first time	Session only
pageStack	Functional	national trust .org.uk	Records the page name and URL of the users journey through the site, to enable back button linking on the web page	Session only
dismissed ExactDate Warning	Functional	national trust .org.uk	Prevents the following message "Flexible on when you go? Add date flexibility to show more results." appearing for 1 hour after the user has dismissed it once	1 hour
Sc	Functional	national trust .org.uk	Allows Promotion Code for Membership joins to be used for 7 days after the user has visited the website with a promotion code	7 days
last Place Viewed	Functional	national trust .org.uk	Records the last place page the user has visited in order to show similar places on the home page.	10 Years or Cookie Delete
pages Visited	Functional	national trust .org.uk	Records page ID of the last 20 pages the user has visited. Used to show similar content on personalised teasers.	10 Years or Cookie Delete
NTAUTH_ JSESSION ID	Essential	national trust .org.uk	Signed In Session SSO	Session only
DIGITAL_ JSESSION ID	Essential	national trust .org.uk	Signed In Session Website & Shop	Session only
SECURE_ JSESSION ID	Essential	national trust .org.uk	Signed In Session MyNT	Session only
NT_ HOLIDAYS_ SESSION_ ID	Essential	national trust .org.uk	For National Trust holidays, used to store last used search start date to initialise the availability calendar when an accommodation is chosen	Session only
SECURE_ HOLIDAYS _SESSION _ID	Essential	national trust .org.uk	Used to enable session for the holidays booking app.	Session only
DONATE _SECURE_ JSESSION ID	Essential	national trust .org.uk	Donate journey session	Session only
JOIN_ JSESSION ID	Essential	national trust .org.uk	For National Trust recruiters at National Trust properties. Used to store property id, the recruitment points within the property (e.g. main reception), and the recruiter’s name. The information stored in this cookie is then used to pre-fill a part of the form for subsequent enrolments.	Session only
SESSION	Essential	national trust .org.uk	Renew journey session	Session only
marketing Preferenc esUpdated	Essential	national trust .org.uk	Records when marketing permissions have been updated. Determines whether a banner is shown to encourage users to update permissions Remembers not to display the GDPR dialog again (some data is also written to local storage to support this functionality)	1 year
cookie Preferen ces	Essential	national trust .org.uk	Records the user's cookie preferences	1 year
JOIN_ INITIATOR	Functional	national trust .org.uk	Takes the user back to the appropriate starting point for the join journey (i.e. either the NT recruiter starting point, or the general public starting point) if the session times out	1 year
JOIN_ RECRUITER _DETAILS	Functional	national trust .org.uk	For National Trust recruiters at National Trust properties. Used to store property id, the recruitment point within the property (e.g. main reception), and the recruiter’s name. The information stored in this cookie is then used to pre-fill a part of the form for subsequent enrolments.	1 year
AMCVS_ xxx_ AdobeOrg	Performance	national trust .org.uk	Adobe Analytics - Unique visitor IDs used by Marketing Cloud Solutions. This cookie is used to identify a unique visitor	Session/ Visit
AMCV_ xxx_ AdobeOrg	Performance	national trust .org.uk	Adobe Analytics - Unique visitor IDs used by Marketing Cloud Solutions. This cookie is used to identify a unique visitor	2 years
s_ecid	Performance	national trust .org.uk	Adobe Analytics - Adobe Experience Cloud uses a cookie to store a visitor ID that is used across Experience Cloud Solutions.	2 years
s_fid	Performance	national trust .org.uk	Adobe Analytics - Fallback unique visitor ID time/date stamp	2 years
ensSite Time Start2	Marketing	national trust .org.uk	Ensighten - Used as part of the functionality to count how many times users remain on site for 30 seconds or more	Session/ Visit
s_cc	Performance	national trust .org.uk	Adobe Analytics - This cookie is set and read by the JavaScript code to determine if cookies are enabled (simply set to "True")	Session/ Visit
s_sq	Performance	national trust .org.uk	Adobe Analytics - This cookie is set and read by the JavaScript code to provide information on links that are clicked on the site.	Session/ Visit
s_dfa	Marketing	national trust .org.uk	Adobe Analytics - Capture DoubleClick For Advertising campaign parameter value.	Session/ Visit
s_vi_ xxxxxx xxxxx	Performance	omtrdc .net	Adobe Analytics - This cookie is used as part of the Adobe functionality to identify a unique visitor. A user may have more than one of these depending on how many NT Sites/site areas they have visited.	2 years
demdex	Performance	the national trust. demdex. net	Adobe Analytics - This cookie is used as part of the Adobe functionality to identify a unique visitor	180 days
dpm	Performance	.dpm. demdex .net	Adobe Analytics - This cookie is used as part of the Adobe functionality to identify a unique visitor	180 days
s_dslvnt	Performance	national trust .org.uk	Adobe Analytics - Used as part of the functionality to see how many days have fallen between a user's visit	Session/ Visit
s_dslvnt_s	Performance	national trust .org.uk	Adobe Analytics - Used as part of the functionality to see how many days have fallen between a user's visit	Session/ Visit
s_ev38	Performance	national trust .org.uk	Adobe Analytics - This cookie is used to identify the marketing channel that last brought the visitor to the site	5 years
s_getNew Repeat	Performance	national trust .org.uk	Adobe Analytics - This cookie is used to identify if a visitor is new or returning	365 days
s_vnum	Performance	national trust .org.uk	Adobe Analytics - This cookie is used to identify the visit number	365 days
ttcp	Performance	national trust .org.uk	Adobe Analytics - Used to calculate time it takes a user to complete purchase from start of their visit	Session/ Visit
ttco	Performance	national trust .org.uk	Adobe Analytics - Used to calculate time it takes a user complete purchase from start of the checkout process	Session/ Visit
s_evpthpg	Performance	national trust .org.uk	Adobe Analytics - Used for pathing reports to deduplicate events	Session/ Visit
s_visitStart	Performance	national trust .org.uk	Adobe Analytics - Used to track a new visit that has started	Session/ Visit
s_campa ignJoin	Performance	national trust .org.uk	Adobe Analytics - Used to store a campaign tracking code in order to deduplicate campaign clickthrough's in a visit	Session/ Visit
s_intcmp	Performance	national trust .org.uk	Adobe Analytics - Used to store an internal campaign tracking code in order to deduplicate clicks in a session	Session/ Visit
s_ppvl	Performance	national trust .org.uk	Adobe Analytics - Used as part of the functionality to see how far users have scrolled down a page	Session/ Visit
s_ppv	Performance	national trust .org.uk	Adobe Analytics - Used as part of the functionality to see how far users have scrolled down a page	Session/ Visit
s_ppn	Performance	national trust .org.uk	Adobe Analytics - Used to allow Adobe Analytics to store the previous page that was viewed on the site - for pathing purposes UserZoom - Used to initiate optional user surveys based on the previous page that has been viewed	Session/ Visit
s_tbms _tbm30	Performance	national trust .org.uk	Adobe Analytics - Used to identify the marketing channel which has brought users to the site	Session/ Visit
s_ptc	Performance	national trust .org.uk	Adobe Analytics - This provides accurate and detailed timing statistics for page load events & asset load times	Session/ Visit
s_invisit	Performance	national trust .org.uk	Adobe Analytics - Used as part of the Visit Number tracking functionality	Session/ Visit
mbox	Performance	national trust .org.uk	Adobe Target This cookie stores a number of values to manage how users experience Target Campaigns. Session ID - A unique ID for a user session. PC ID – An ID for the user’s browser. Check – An ID for the user’s browser. Disable – Set if a user’s load time exceeds the Adobe Target timeout.	2 weeks
mbox Edge Cluster	Performance	national trust .org.uk	Adobe Target This cookie stores a number of values to manage how users experience Target Campaigns.	Session/ Visit
s_tbm	Performance	national trust .org.uk	Adobe Analytics - The cookie identifies the marketing channel through which the user accessed the page	Session/ Visit
cmgvo	Performance	national trust .org.uk	Adobe Analytics - The cookie identifies the marketing channel through which the user accessed the page	Session/ Visit
2c.cId	Marketing	shop. national trust. org.uk	Nosto - To identify browsers between their visits to the site	4 years
AWSELB	Performance	shop. national trust. org.uk	Amazon Web Services - Elastic Load Balancing functionality for routing client request on the server	24 hours
AWSELB CORS	Performance	shop. national trust. org.uk	Amazon Web Services - Elastic Load Balancing functionality for routing client request on the server	24 hours
form_key	Essential	shop. national trust. org.uk	A security measure that appends a random string to all form submissions to protect the data from Cross-Site Request Forgery (CSRF).	24 hours
klevu_rs _klevu	Functional	shop. national trust. org.uk	Klevu - Records recent searches	1 year
login_ redirect	Essential	shop. national trust. org.uk	Preserves the destination page the customer was navigating to before being directed to log in	Session
mage- cache- sessid	Essential	shop. national trust. org.uk	The value of this cookie triggers the cleanup of local cache storage	Session
mage- cache- storage	Essential	shop. national trust. org.uk	Local storage of visitor-specific content that enables e-commerce functions	Session
mage- cache- storage -section- invalida tion	Essential	shop. national trust. org.uk	Forces local storage of specific content sections that should be invalidated.	24 hours
mage- messages	Essential	shop. national trust. org.uk	Tracks error messages and other notifications that are shown to the user, such as the cookie consent message, and various error messages, The message is deleted from the cookie after it is shown to the shopper	1 year
mage- translat ion-file -version	Essential	shop. national trust. org.uk	Stores the file version of translated content	24 hours
mage- translat ion- storage	Essential	shop. national trust. org.uk	Stores translated content when requested by the shopper	24 hours
nosto. items AddedTo Cart	Marketing	shop. national trust. org.uk	Nosto - Tracking items added to cart	Session
nostojs	Marketing	shop. national trust. org.uk	Nosto - Used to indicate whether or not the visitors browser has JavaScript enabled	4 years
persisten t_shoppin g_cart	Essential	shop. national trust. org.uk	Stores the key (ID) of persistent cart to make it possible to restore the cart for an anonymous shopper	1 year
PHPSESS ID	Essential	shop. national trust. org.uk	To store the logged in user's username and a 128bit encrypted key. This information is required to allow a user to stay logged in to a web site without needing to submit their username and password for each page visited. Without this cookie, a user is unable to proceed to areas of the web site that require authenticated access	24 hours
private_ content_ version	Essential	shop. national trust. org.uk	Appends a random, unique number and time to pages with customer content to prevent them from being cached on the server	10 years
product _data_ storage	Marketing	shop. national trust. org.uk	Stores configuration for product data related to Recently Viewed / Compared Products	24 hours
recently _compare d_product	Marketing	shop. national trust. org.uk	Stores product IDs of recently compared products	24 hours
recently_ compared_ product_ previous	Marketing	shop. national trust. org.uk	Stores product IDs of previously compared products for easy navigation	24 hours
recently _viewed_ product	Marketing	shop. national trust. org.uk	Stores product IDs of recently viewed products for easy navigation	24 hours
recently _viewed_ product_ previous	Marketing	shop. national trust. org.uk	Stores product IDs of recently previously viewed products for easy navigation	24 hours
section _data_ ids	Essential	shop. national trust. org.uk	Stores customer-specific information related to shopper-initiated actions such as display wish list, checkout information, etc	Session
sso-login	Essential	shop. national trust. org.uk	Single Sign On login from nationaltrust .org.uk	Session
store	Essential	shop. national trust. org.uk	Tracks the specific store view / locale selected by the shopper	1 year
user_ allowed _save_ cookie	Essential	shop. national trust. org.uk	Indicates if the shopper allows cookies to be saved	24 hours
X- Magento -Vary	Performance	shop. national trust. org.uk	Configuration setting that improves performance when using Varnish static content caching	1 hour
XSRF- TOKEN	Essential	shop. national trust. org.uk	Written to help with site security in preventing Cross-Site Request Forgery attacks	Session
_epik	Marketing	national trust. org.uk	Pinterest - Used to match clicks on Pinterest ads to actions taken on site.	1 year
_derived_epik	Marketing	national trust. org.uk	Pinterest - Used to match clicks on Pinterest ads to actions taken on site.	1 year
_pin_unauth	Marketing	national trust. org.uk	Pinterest - Used to match clicks on Pinterest ads to actions taken on site.	1 year
_routing_id	Marketing	national trust. org.uk	Pinterest - Used to match clicks on Pinterest ads to actions taken on site.	1 year
UZ_TI_S_ <CODE>	Performance	national trust. org.uk	UserZoom - used to initiate a survey	Can vary but defaults to 20 days
UZ_TI_dc_ value	Performance	national trust. org.uk	UserZoom - used to determine if a survey has already been shown to the user to prevent them seeing it twice	Can vary but defaults to 20 days
uziduser	Performance	.s.userzoom. com	UserZoom - contains the participant ID to relate it with the data sent to the UserZoom platform	Session
uzstudy	Performance	.s.userzoom. com	UserZoom - contains the study ID to relate it with the data sent to the UserZoom platform	Session
uzchkcookie	Performance	.s.userzoom. com	UserZoom - detects if the browser allows cookies to be added	Session
ASP.NET_ SessionId	Performance	.s.userzoom. com	UserZoom - identifies the information that is sent by the participant to the UserZoom platform	Session
Quantum MetricSession Id	Performance	national trust. org.uk	Quantum Metric – This cookie is used by Quantum Metric to identity a unique visitor.	Session
Quantum MetricSession Id	Performance	national trust. org.uk	Quantum Metric – This cookie is used by Quantum Metric to identity a unique visitor.	1 year
Quantum MetricEnabled	Essential	national trust. org.uk	Quantum Metric – This cookie is used to end a Quantum Metric session if a user updates their consent preferences to reject performance cookies mid-session.	Session
channelSource	Marketing	national trust. org.uk	AWIN – Used to allow AWIN to correctly attribute on site conversions	Session/Visit
__adal_ca	Marketing	national trust. org.uk	Store which TV advertising campaign drove a user to visit (traffic source)	6 months
__adal_cw	Marketing	national trust. org.uk	Tie back conversion events to earlier visits (visit timestamp)	7 days
__adal_id	Marketing	national trust. org.uk	Uniquely identify a device (device ID generated)	2 years
__adak_se	Marketing	national trust. org.uk	Confirms the existence of an active session	30 minutes/session

Third party cookies

We use third party cookies for the purposes of advertising and analytics. The below table outlines the purpose of each of our current third party cookies and gives links to the privacy policies of each third party. Please note the third party cookies used may change as we work with new or different suppliers – this list will be reviewed and updated quarterly.

Cookie author	Cookie category	Cookie purpose	Link to third party policy
Amazon	Marketing	This cookie allows the display of adverts which are relevant to you and your interests	https://www.amazon .co.uk/adprefs
Media IQ	Marketing	This cookie allows the display of adverts which are relevant to you and your interests	http://wearemiq.c om/privacy-policy/
Affiliate Window	Marketing	Allow conversion tracking	https://www.awin .com/gb/legal/ privacy-policy
Google Adwords	Marketing	Allow conversion tracking, optimisation and remarketing	https://policies. google.com/ technologies/ ads
Facebook	Marketing	Allow conversion tracking, optimisation and remarketing	https://www.facebook .com/policy.php
Google Doubleclick	Marketing	Allow conversion tracking and optimisation	https://policies. google.com/ technologies/ads
Rocket Fuel/Zeta Global	Marketing	Allow conversion tracking, optimisation and remarketing	https://www.zeta global.com
TVSquared	Marketing	Allow conversion tracking	https://tvsquared .com/ privacy-policy/
klick2 contact	Functional	Allows you to interact with live chat for help in certain sections of the website	https://www.eckoh .com/ customer- engagement /chat
Klevu	Marketing	Used to distinguish user and to store the Zopim Live Chat ID used to identify a device across visits	https://www.klevu .com/terms- of-service/
Nosto	Marketing	Used to distinguish users	https://www.nosto .com/ data-privacy/
New Relic	Performance	Preserves users states across page requests	https://newrelic.com /termsandconditions/ cookie-policy
Pinterest	Marketing	Allow conversion tracking, optimisation and remarketing	https://policy. pinterest.com/ en/privacy-policy
Sage Pay	Essential	Verifies if the visitors browser has JavaScript enabled, preserves users states across page requests. Stores information about the categories of cookies the site uses and whether visitors have given or withdrawn consent for the use of each category. A cookie is also managed by AWS and is used for load balancing	https://www.opayo .co.uk /policy/cookies
Tiktok	Marketing	Allow conversion tracking, optimisation and remarketing	https://www.tiktok.com/ legal/privacy-policy
Twitter	Marketing	Allow conversion tracking, optimisation and remarketing	https://help.twitter .com/en/rules -and-policies/ twitter -cookies
UserZoom	Performance	Four cookies are set by Google Analytics to allow integration with that platform.	https://www.userzoom.com/ privacy-policy/study-participants/
Quantum Metric	Performance	Identify unique visitors	https://www.quantummetric.com/ legal/privacy-policy/
Blis	Marketing	Allow conversion tracking and campaign optimisation	https://blis.com/blis-privacy-policy-for-online-advertising-and-related-uses
Reddit	Marketing	Allow conversion tracking and campaign optimisation	https://www.reddit.com/policies/cookies?rdt=40557
Beeswax	Marketing	Allow conversion tracking and campaign optimisation	https://www.beeswax.com/cookies/
Microsoft	Marketing	Allow conversion tracking and campaign optimisation	https://about.ads.microsoft.com/en-us/solutions/xandr/digital-platform-cookie-policy
The Trade Desk	Marketing	Allow conversion tracking and campaign optimisation	https://www.thetradedesk.com/us/privacy
Adalyser	Marketing	Measure site visits or actions that take place off the back of a TV campaign	https://www.adalyser.com/en/terms

Third party tools

Some of the content on our website uses third party tools. These tools may use additional cookies.

Supplier	Purpose
Youtube	Youtube is used to provide video content on the website
AudioBoom	Audio Boom is used to provide audio/podcast content on the site
View it 360	View it 360 is used to provide some virtual tour content
JW player	JW Player is used to provide video/live stream content on the website

You can manage your cookie preferences any time you visit our website.

Cookies can also be controlled by your web browser settings. Whether our cookies are used will depend on your browser settings, so you’re in control. To find out more about cookies, including how to see what cookies have been set and how to manage and delete them, please use the following links:
Please note that these links will take you to other sites. The National Trust is not responsible for the information and the setting of cookies on these other sites.

Please be aware that by blocking all cookies, you may not be able to access or use all the features of our website and you will not receive a personalised experience.
If you don’t want to accept cookies from our emails that you’ve subscribed to, there are some ways to manage this. In your email settings you can choose not to enable downloading of images from emails. You can also avoid clicking on any link in the email.

In some instances, depending on your email or browser settings, cookies in an email may be automatically accepted, for example, when you've added an email address to your address book or safe senders list. Please refer to your email browser or device instructions for more information on this.

If you have any questions in relation to the cookies we use, please contact us.
We will occasionally update this cookie policy to reflect changes in our departments and services. When we post changes to this cookie policy, we will revise the 'Last updated' date at the top of this cookie policy.

If we make any material changes in the way we collect, use, and/or share information held in cookies, we will notify you by prominently posting notice of the changes on the website.

We recommend that you check this page from time to time to inform yourself of any changes in this cookie policy or any of our other policies.