Cookies policy

This policy contains information on what cookies are used on The Royal Marsden Cancer Charity’s website, why, how we use cookies and how to manage your cookie preferences.

This policy contains information on what cookies are used on The Royal Marsden Cancer Charity’s website, why, how we use cookies and how to manage your cookie preferences. This policy refers to both 'cookies' and 'similar technologies' such as pixels or tags as cookies.  

Your privacy is important to us, and we are committed to protecting your personal information. For full details on our approach to data protection, you can find out more in our privacy policy. 

On this page:

What are cookies?

When you visit any website, it may store or retrieve information on your browser, by using cookies or similar technologies. A cookie is a small text file placed on your device (phone or computer) by websites you visit.  

Cookies can perform essential tasks, that help the website function properly. They can also collect and store information for analytics and marketing purposes.

More information about cookies.

First-party and third-party cookies 

There are two types of cookies - 'first-party' and 'third-party' cookies. First-party cookies are served by our website to your device and are usually used to help our website function properly. Third-party cookies are set by our service providers for example Google or Facebook. These cookies are commonly used for website analytics or advertising purposes.  

Session and persistent cookies 

Cookies can be 'session cookies' or 'persistent cookies'. Session cookies are automatically removed when you close your browser. Persistent cookies remain on your computer until they expire, or you delete them from your browser history. 

‘Similar technologies’ - What are pixels or tags? 

Similar technologies, like tags, pixels, beacons, floodlights, or clear GIFs, are often used alongside cookies. They are used to help count users and generate statistics about site usage and can also be used by our third-party suppliers to collect data for measuring advertising campaign performance and reach. 

How does the Royal Marsden Cancer Charity use cookies? 

The Royal Marsden Cancer Charity uses cookies and similar technologies for various purposes including: 

  • Essential website functionality such as secure payments. 
  • Analytics to help us understand and measure how our users interact with our website and what content performs well.  
  • To enable social media features. 
  • To help with our marketing efforts.  

The cookies we use are a mixture of both first and third-party cookies, and these cookies can be session or persistent. We use third-party cookies (set by other organisations such as Google, Bing, and Facebook) and similar technologies like pixels and tags.

Some of these are vital for functionality, such as enabling secure payments, while others aid in measuring website usage, providing targeted advertising, and analysing data. Each third-party company is responsible for the cookies that they place onto your device and have separate policy documents to highlight their use. 

Our website also links to external websites, such as social media platforms, fundraising platforms, and other services. These websites may set different cookies so when you navigate away from our site, please ensure you have read and understood their privacy policy, in addition to our own.  

The cookies we use  

Essential cookies: 

These cookies are essential for our website to function properly and cannot be disabled. They are typically triggered by your actions, such as setting privacy preferences, making transactions, or filling in forms. While you can configure your browser to block or notify you about these cookies, certain parts of the site may not work. These cookies do not store personally identifiable information. 

Find out more about the essential cookies we use.


Cookie owner 

Cookie type 

Cookie names and duration 



The Royal Marsden Cancer Charity website  First-party  cookie-agreed (90 days)  Compliance  Cookie guidelines regulate that visitors must be informed if cookies are used on a website. This cookie saves the visitors' chosen cookie consent options.  
The Royal Marsden Cancer Charity website  First-party SSESS* (1month)  Functionality  This cookie is needed to provide a responsive website. This cookie is used by our website software, Drupal, to store the ID of the https session of the user. This is set on Login to ensure the user remains logged in. 


  • __stripe_mid (1 year) 
  • m (1 year 1 month) 
  • __stripe_sid (30mins)  
Payments  We use stripe to process some transactions on our website. These cookies are necessary for making secure credit and debit card transactions. Stripe's privacy policy and cookie policy
Google  Third-party  rc::a (persistent)  Security  This cookie is linked to the Google ReCAPTCHA service. This service provides security and helps distinguish bots from humans. Google's privacy policy and cookie policy
Google  Third-party 
  • AEC (6months) 
  • SIDCC (1 year) 
Security  These cookies ensures that requests within a browsing session are made by the user, and not by other sites. These cookies prevent malicious sites from acting on behalf of a user without that user’s knowledge. Google's privacy policy and cookie policy
Cloudflare  Third-party 
  • _cfduid (1 year) 
  • __141_cid (1 year) 
  • __io_cid (1 year) 

These cookies are set by our hosting provider Cloudflare. They are used to identify bots and apply security measures. They help manage traffic and protects our website from malicious activity. Cloudflare's cookies and privacy policy

Our essential cookies. 
Non-Essential cookies: 

You can choose whether to accept these cookies or not, and we rely on your consent to use these cookies. These cookies don't collect personal details like names or email addresses but can collect things like device-related data or browsing data.  

Our non-essential cookies are made up of four types of cookies: 

  • Functional cookies: These cookies make the site work well and provide additional functionality and personalisation.  
  • Analytics cookies: These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our website. All information these cookies collect is aggregated and therefore anonymous. 
  • Advertising cookies: These cookies may be set through our site by our advertising partners. They do not store directly personal information but function by identifying your browser or device using a randomly generated user ID. These cookies allow us to use services like Facebook Ads or Google ads and show our audiences relevant marketing campaigns.  
  • Social cookies: These cookies support functionality that enables you to share our content with your friends and networks on social media if you choose. If you use this functionality, these social media services may set cookies.  

More information about our non-essential cookies and why we use them.

Cookie owner 

Cookie type 


Cookie names and duration 


Google Analytics 



  • _ga_* (1year) 
  • _ga (1 year) 
  • _gid (1 day) 
  • _dc_gtm_* (1 minute) 

These cookies are used for Google analytics services. They collect information that report site usage statistics without personally identifying individual visitors.  

Google Ads 



  • OTZ (30 days) 
  • SAPISID (2 years) 
  • SSID (2 years) 
  • __Secure-1PAPISID 
  • HSID (2 years) 
  • __Secure-1PSID (2 years) 
  • __Secure-1PSIDCC (2 years) 
  • SID (2 years) 
  • APISID (2 Years)  
  • __Secure-3PAPISID (2 years) 
  • __Secure-1PAPISID (2 years) 
  • __Secure-3PSIDCC (2 years) 
  • __Secure-3PAPISID (2 years) 


These cookies are used by Ggoogle to collect information on the number and behaviour of users to inform Ggoogle advertising. They are also used to display personalized advertisements relevant to your interests based on your interactions with websites.  

Google's privacy policy and cookie policy






  • _hjAbsoluteSessionInProgress (session length) 
  • _hjFirstSeen (session length) 
  • _hjSessionUser_343253 (1 year) 
  • _hjIncludedInSessionSample_343253 (2mins) 
  • _hjSession_343253 (30mins) 
  • _hjUserId (1 year) 
  • _hjClosedSurveyInvites (1 year) 
  • _hjDonePolls (1 year) 
  • _hjMinimizedPolls (1 year) 
  • _hjDoneTestersWidgets (1 year) 
  • _hjMinimizedTestersWidgets (1 year) 
  • _hjDoneSurveys (1 year) 
  • _hjIncludedInSample (2mins) 

These cookies are used to enable Hotjar’s analytics services They collect information that report site usage statistics through a range of tools such as heatmaps, feedback polls and surveys. The data collected does not personally identifying individual visitors. 


We use this service to help see what content is working for our audience. This helps us to improve your experience and ensure you can easily find what you are looking for. 

Hotjar's privacy policy




Social and advertising 

  • guest_id (1 year) 
  • personalization_id (1 year) 
  • guest_id_marketing (1 year) 
  • guest_id_ads (1 year) 
  • Ct0 (1 year) 
  • muc_ads (1 year 1month) 

Used by Twitter to help display tweets on our site, monitor referral links, and collect data related to the Twitter platform. They also authenticate users as logged in when using social sharing. Twitter's cookie policy




Social and advertising 


  • _fbp (3 months) 
  • Meta Pixel  

Meta uses cookies, and pixels to provide measurement services, target and deliver adverts.  

Meta's privacy policy





  • YSC (session length) 
  • VISITOR_INFO1_LIVE (6 months) 


These cookies track the number of plays and watch times of embedded videos. YouTube's privacy policy

Microsoft/ Bing Ads 




  • MUID (1 year) 
  • _uetsid (1 day) 
  • _uetvid (1 year) 
  • MR (1 month) 

These cookies are used by Microsoft Bing to identify your browser, show you relevant ads and provide statistics that are used to optimise Bing Ads campaigns. Microsoft Ads information




Functional and analytics 

  • _shopify_s,  30min 
  • _shopify_sa_p (30 mins) 
  • _shopify_y (1 year) 
  • checkout_session_token (3 weeks) 
  • cart_ts (2 weeks) 


Our online shop ( may set essential cookies to remember items in your basket and process secure transactions during checkout. It also uses these cookies to track statistical information about user behaviour and purchases. Shopify's privacy policy

How to manage cookies 

You control your preferences  

We use a cookie banner to collect consent to store cookies on your device. You can use the options provided on this banner to let us know if you consent to the use of non-essential cookies on our website.  

If you wish to have further control over cookies, you can adjust or disable cookies by changing your settings in your web browser or you can use incognito/private browsing. You can also delete cookies that have already been set. Rejecting cookies completely may negatively impact on your experience of our website and functionality.  

Find more information about managing cookies on your browser here: 

More information and changes to our policy 

For full details on our approach to data protection, please refer to our privacy policy.  

This policy may be updated to reflect changes to guidance or regulations or to incorporate new cookies that have been introduced. If our cookies policy changes in any way, we will place an updated version on this page. Regularly reviewing this page ensures you are always aware of what information we collect, how we use it and under what circumstances, if any, we will share it with other parties. 

If you have any further questions about the use of cookies on our website, please contact us: 

Data Protection and Privacy

Supporter Care

The Royal Marsden Cancer Charity

Fulham Road

London SW3 6JJ


This page was last updated: 10 July 2023