Privacy and security

2. How we use cookies

This page contains information about the cookies used by this website and other Alzheimer’s Society online platforms.

What are cookies?

This website uses cookies. A cookie is a small text marker stored on your computer that enables us to track the use of our website. We use cookies to help us understand what our users' interests and preferences are to ensure the website is as user friendly as possible.

Learn more about cookies on

How do we use cookies?

This site uses cookies in order to provide a service to visitors. No personal data is stored in these cookies, which are used to:

  • allow users to log in to the website;
  • check that cookies can be set and therefore determine whether a user is able to log in;
  • store a reference to form data that is stored on the web server;
  • help us better understand how visitors engage with this website;
  • help us ensure that our marketing is as cost-effective as possible.

This site uses both first party and third party cookies. 

Managing cookies

Cookies help us to ensure that our website is as good as it can be for our users, and that all our digital marketing is as efficient as it can be (so we spend less money). Cookies pose little threat to your privacy, but some people may want to turn them off anyway. Please be aware that if you disable all cookies, some elements of our website may not work properly (such as using our online shop or event registration).

Firefox: Enable and disable cookies that websites use to track your preferences

Safari: Managing Cookies

Google Chrome: Manage cookies

Opera: Security & Privacy in Opera

Internet Explorer: How to manage cookies in Internet Explorer 9, How to delete cookie files in Internet Explorer

Cookies we use

This section lists all the cookies used by Alzheimer’s Society.

Google Analytics

We use Google Analytics to collect information about use of this site. Google Analytics collects information such as how often users visit this site, what pages they visit when they do so, and what other sites they used before coming to this site.

We may use Google Analytics for the following purposes:

  • Remarketing (showing ads on third party websites). Alzheimer's Society and third-party vendors, including Google, use cookies to inform, optimise and serve ads based on someone's past visits to our website.
  • Google Display Network Impression Reporting. Alzheimer's Society and third-party vendors, use cookies to report how our ad impressions, other uses of ad services and interactions with these ad impressions and ad services are related to visits to our site.
  • Google Analytics Demographics and Interest Reporting. Alzheimer’s Society uses data from Google's Interest-based advertising or 3rd-party audience data (such as age, gender and interests) with Google Analytics to inform our marketing strategy.

Visitors can opt out of Google Analytics for Display Advertising and customise Google Display Network ads using Google's Ad Settings page.

Visitors can opt out of Google Analytics using this browser add-on.

Google Analytics collects only the IP address assigned to you on the date you visit this site, rather than your name or other identifying information. We do not combine the information collected through the use of Google Analytics with personally identifiable information.

Although Google Analytics plants a permanent cookie on your web browser to identify you as a unique user the next time you visit this site, the cookie cannot be used by anyone but Google. Google's ability to use and share information collected by Google Analytics about your visits to this site is restricted by the Google Analytics Terms of Use (as amended for government websites) and the Google Privacy Policy

Google Analytics employs cookies to collect data about how visitors are using the websites. Google Analytics uses only first-party cookies for data analysis. This means that the cookies are linked to a specific website domain, and Google Analytics will only use that cookie data for statistical analysis related to your browsing behaviour on that specific website. According to Google, the data collected cannot be altered or retrieved by services from other domains.

Cookie Details

  • __utma - This cookie is typically written to the browser upon the first visit to your site from that web browser. If the cookie has been deleted by the browser operator, and the browser subsequently visits your site, a new __utma cookie is written with a different unique ID. This cookie is used to determine unique visitors to your site and it is updated with each page view. Additionally, this cookie is provided with a unique ID that Google Analytics uses to ensure both the validity and accessibility of the cookie as an extra security measure.
  • __utmb - This cookie is used to establish and continue a user session with your site. When a user views a page on your site, the Google Analytics code attempts to update this cookie. If it does not find the cookie, a new one is written and a new session is established. Each time a user visits a different page on your site, this cookie is updated to expire in 30 minutes, thus continuing a single session for as long as user activity continues within 30-minute intervals. This cookie expires when a user pauses on a page on your site for longer than 30 minutes.
  • __utmc - Historically, this cookie operated in conjunction with the __utmb cookie to determine whether or not to establish a new session for the user. For backwards compatibility purposes with sites still using the urchin.js tracking code, this cookie will continue to be written and will expire when the user exits the browser.
  • __utmz - This cookie stores the type of referral used by the visitor to reach your site, whether via a direct method, a referring link, a website search, or a campaign such as an ad or an email link. It is used to calculate search engine traffic, ad campaigns and page navigation within your own site. The cookie is updated with each page view to your site.
  • __utmx - This cookie is used by Website Optimizer and only set when the Website Optimizer tracking code is installed and correctly configured for your pages. When the optimizer script executes, this cookie stores the variation this visitor is assigned to for each experiment, so the visitor has a consistent experience on your site. See the Website Optimizer Help Center for more information.
  • _dc_gtm_UA-2332956-1 - This cookie is used to inform, optimise and serve ads on sites across the internet based on your prior visits to this website.
  • _ga - this is used to distinguish users and expires after two years.

Google AdWords

We also make use of AdWords remarketing functionality. This allows us to target people who have previously visited our site with display advertising. In order to do this, we make use of AdWords remarketing tags that set information within a cookie. is the domain that serves ads for Google's Display Network. Google serve their ads based on a visitor's interests and you can find out more information by visiting Google Ad Preferences.

We also use Google's cookie for conversion tracking purposes, to track the performance of our AdWords campaigns. If you visit certain pages on our website within 30 days of clicking on one of our ads, Google (and Alzheimer's Society) will be able to tell that your visit was a result of a click on one of these ads. 

Content management system

Jadu is the content management system used to power most content on You can find out more at

Cookie Details

  • Test - 'Test', Jadu cookie is set to determine whether cookies can be set. It only contains the value 'Test' and no other details. We're looking to remove this from future versions of the CMS.
  • Session ID - This is used to maintain a user's session when they log in. It just contains the session ID and no personal details.

Research grant application

CC Grant Tracker is the system we use to process research grant applications and therefore is only relevant to those applying to Alzheimer's Society for a research grant.

Cookie Details

  • CCGT - Authentication cookie that keeps track of who is currently logged into the system in that particular browser session.

Online library

Liberty 3 is the system used by our online library the Dementia Catalogue.

Cookie Details

  • Session ID - The only cookie that Liberty3 uses is one for a session ID.

Online forum

vBulletin 4 is the forum software used to power our online forum Talking Point. This will use different cookies depending on whether you are a member or viewing the forum as a guest.

Cookie Details

  • languageid - Stores the user's choice of language.
  • lastactivity - Stores the time of the user's last 'activity' on the forum.
  • lastvisit - Stores the time of the user's last 'visit' to the forum.
  • np_notices_displayed - Stores any popup notice messages that have already been displayed to the user.
  • password - Stores an encrypted version of the password the user authenticated with. If the password is changed, for example on a different computer, the user will be asked to log in again.
  • pda - Flags whether the browser is a PDA. Only set when browsing the archive version of the forums.
  • sessionhash - A randomly generated session identifier used to link the user's browser session with session data stored in the database.
  • skimlinks_enabled - Stores whether Skimlinks, an affiliate marketing platform is enabled for this user. Skimlinks is not enabled on Talking Point so although the cookie is dropped onto a user's computer it is not used.
  • skipmobilestyle - Flags whether to use mobile-compatible styles.
  • threadedmode - Stores the format the user wants to use to display forum threads (linear/hybrid/threaded) if they have changed it from the default.
  • userid - Stores the user ID number of the logged in user.
  • userstyleid - Stores the ID of the vBulletin user interface style the user has selected to display the forums in, if they are allowed to change it from the default. Currently users cannot change the default style on Talking Point.
  • vbulletin_inlinepost - Stores post ID's during inline moderation. Only really used for backwards compatibility with earlier versions of vBulletin.
  • vbulletin_inlinethread - Stores thread ID's during inline moderation. Only really used for backwards compatibility with earlier versions of vBulletin.
  • vbulletin_multiquote - Stores post ID's when multi-quote replying to a thread.
  • vr_sessionid - Stores Vertical Response (an email marketing platform) session ID. We do not use this feature of vBulletin.

Online shop

Our online shop uses an e-commerce platform supplied by Welford Media.

Cookie Details

  • Session ID - Session ID used to control the users basket/order/login status.

Online registration

Alzheimer's Society uses a platform called Cvent for the purposes of secure online registration, particularly for our fundraising events. Cvent uses cookies to save usernames in order to minimize data entry and for general ease of use. Cookies are also used to 'time-out' user sessions that are idle for an extended period of time. Cvent may also use user IP addresses to diagnose problems with Cvent servers and to administer the Cvent application. More information can be found on the Cvent website.

Internal search engine

Our site search is based around the Google Search Appliance, a computer server that continuously monitors and indexes the content of the site. The Google Search Appliance is designed to work exactly like Google on the web, and it is connected directly to our web server. However, its index is completely independent from the web version, and no information is passed onto third parties, including Google.

Social network sharing

Alzheimer's Society uses AddThis, a service that allow users to share content via social networking websites and email. You can find more about their privacy policy on their website. You can easily stop AddThis from collecting any information about you for online behavioural advertising by opting out. This will prevent advertisers from receiving any data that could be used to tailor advertising for you.


We embed videos using YouTube's privacy-enhanced mode. This mode may set cookies on your computer once you click on the YouTube video player, but YouTube will not store personally-identifiable cookie information for playbacks of embedded videos using the privacy-enhanced mode. To find out more please visit YouTube's embedding videos information page. Read Google’s Privacy Policy for more information.


Twitter uses both session cookies and persistent cookies to improve their service including understanding user interaction, monitor aggregate usage and web traffic routing.

Find out more about Twitter privacy policy.


Facebook uses cookies for showing content and advertising, improving their products and services and for security.

Read Facebook’s Privacy statement for more information.


We use this service to help us better understand how you are using our website and how we can make it better through a range of tools such as heatmaps, feedback polls and surveys.

Hotjar sets these cookies on your device:

  • _hjUserId is set as soon as a user loads a page which contains the Hotjar code. The cookie contains a universally unique identifier (UUID) which allows Hotjar to track the same visitor across multiple pages and sessions. It expires after 365 days.
  • _hjClosedSurveyInvites is set once a visitor interacts with a survey invitation modal popup. It is used to ensure that the same invite does not re-appear if it has already been shown. It expires after 365 days.
  • _hjDonePolls is set once a visitor completes a poll. It is used to ensure that the same poll does not re-appear if it has already been filled in. It expires after 365 days.
  • _hjMinimizedPolls is set once a visitor minimizes a Feedback Poll widget. It is used to ensure that the widget stays minimizes when the visitor navigates through your site. It expires after 365 days.
  •  _hjDoneTestersWidgets is set once a visitor submits their information in the Recruit User Testers widget. It is used to ensure that the same form does not re-appear if it has already been filled in. It expires after 365 days.
  •  _hjMinimizedTestersWidgets is set once a visitor minimizes a Recruit User Testers widget. It is used to ensure that the widget stays minimizes when the visitor navigates through your site. It expires after 365 days.
  •  _hjDoneSurveys is set once a visitor completes a survey. It is used to only load the survey content if the visitor hasn't completed the survey yet. It expires after 365 days.
  • _hjIncludedInSample is set to let Hotjar know whether that visitor is included in the sample which is used to generate funnels. It is a session cookie and expires when the visitor closes their browser.
  • optimizelyEndUserId Contains the end user's unique identifier. It is a combination of a timestamp and random number. No personal information is stored. It expires after 10 years.
  • optimizelySegments Stores the user's audience and dimension information (e.g., browser, campaign, mobile, source type, custom dimensions). It expires after 10 years.
  • optimizelyBuckets Stores the experiments and variations of the site that a user has been bucketed into. This ensures the user consistently sees the same variation, even over multiple sessions. It expires after 10 years.

You can read Hotjar's cookie information for further information.

This page was last updated in January 2017. If our use of cookies changes, we will update this page. Regularly reviewing this page ensures you are always aware of what cookies may be set while you browse this website.