Our cookie list The aim of this cookie list is to help you recognise the cookies placed on your browser when you visit our websites or see adverts for us elsewhere.
We have tried to cover all the cookies which we, or our technology partners, use but please bear in mind that sometimes there may be a short delay in updating this list. If you do notice a discrepancy, or think a cookie is missing, please let us know.
Our which.co.uk cookies
JSESSIONID
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting.
COOKIE_USERNAME_WOL
Once you’ve logged on to our website as a member, this cookie will remember your login details if you tick the ‘remember me’ box.
COOKIE_DISPLAYNAME_WOL
This cookie is used in the member generated content areas of our site, such as our product reviews and forums. Its job is to display your name and to attribute any posts that you make to you.
ARPT
This is a technical ‘session’ cookie set by our website to share the number of visitors we get on our site between web servers. This is so the site does not get overloaded and can perform at its optimum potential.
anonId
This cookie is used to give a unique number to website 'browsers' so each one can be recognised if needs be.
sso_auth, CASTGC
These cookies allow you to stay logged in as you move between different parts of our site. They expire once your visit is finished or you log out.
uid, _csuid, _csoot
These cookies are used by Add This, one of our technology partners. They track which of the social networking options you use (email a friend, send to Facebook etc). This information is only collected in aggregate form so we can tell which are the most popular tools.
s_pers, s_sess, s_vi and fpc10001177276537
These cookies are used to collect our web analytics data – such as visits per page. This is then sent to our technology partners Omniture who provide us with statistical analysis.
source_code
If you have come to us by clicking on a Which? advert; such as a Google advert, a link to our website on one of our partner sites or an email, this cookie will be set on your browser when you click through so we know where you came from – and which adverts of ours are proving popular.
offer_code
If you’re not already a member of Which?, this cookie lets us know which product or offer was displayed in the Which? advert you are responding to. This ensures you see the correct information online and receive the correct products or services you have requested.
at
This ‘session’ cookie is set on login to enable you to comment on our reviewed products during your visit.
Our which.co.uk/publications/books cookies
These cookies are set by our Which? Books technology partners, WordPress and GetShopped:
PHPSESSID
This cookie is a 'session cookie' which tells us that you are actively visiting our site and expires when you close your browser.
eshopcart
This cookie is used to remember what is in your shopping cart.
wordpress_[unique name]
This cookie is a 'session cookie' that contains your username followed by an ID and expires when you close your browser.
wordpress_test_cookie
This checks if cookies are enabled and keeps you logged in and expires when you close your browser.
wp-settings-1 Session management cooking
This is required by our WordPress and holds no personally identifiable information.
wp-settings-time-1
This cookie records the time you logged in (if you have). This expires after one year.
Our whichdigitalstore.co.uk cookies
These cookies are set by our Which? Digital Store technology partner, the OTHER media:
JSESSIONID
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting.
s_pers, s_sess, s_vi and fpc10001177276537
These cookies are used to collect our web analytics data – such as visits per page. This is then sent to our technology partners the OTHER media who provide us with statistical analysis.
mojo1, mojo2, mojo3, svid
These cookies provide advert tracking services by (.mediaplex.com)
id, __ar_v4, test_cookie
These cookies provide advert tracking services by (.doubleclick.net)
source_code
If you have come to us by clicking on a Which? advert; such as a Google advert, a link to our website on one of our partner sites or an email, this cookie will be set on your browser when you click through so we know where you came from – and which adverts of ours are proving popular.
offer_code
If you’re not already a member of Which?, this cookie lets us know which product or offer was displayed in the Which? advert you are responding to. This ensures you see the correct information online and receive the correct products or services you have requested.
fpc10003085618
This cookie is used to collect our web analytics data – such as visits per page. This is then sent to our technology partners the OTHER media who provide us with statistical analysis.
ARPT
This is a technical ‘session’ cookie set by our website to share the number of visitors we get on our site between web servers. This is so the site does not get overloaded and can perform at its optimum potential.
JEB2, CfP
This is a unique ID for the browser, so we know if an ad has already been placed. (.adtech.staticwhich.co.uk)
ASP.NET_SessionId, stcs2653, stc2653, tst, ctst S
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting. (.tracking.dc-storm.com)
SSO_AUTH
This cookie supports to link subscriptions between Which? platforms
Our which.co.uk/mobile cookies
mojo1, mojo3
This cookie is set by our Which? Mobiles technology partner Mediaplex to track external adverts
svid
This is a tracking cookie that identifies if you have visited via an advert before, set by our Which? Mobiles technology partner Mediaplex
di, dt, loc, psc, ssh, sshs, uid, uit
These cookies are used to track usage of Which? Mobiles technology partner Addthis.com service. Addthis allows the user to share a webpage with many social sites.
ASP.NET_SessionId
This is a session cookie that identifies a unique visit to the feedback site set by whichfeedback.co.uk.
These cookies are set by our Which? Mobile technology partner, DC Storm:
_#srchist
This cookie stores the history of links that a user has clicked on to navigate to the Which? Mobile site.
_#sess
This cookie stores information about a session such as page views, site search terms and the length of the visit, so that we know which pages are most interesting to Which? Mobile users.
_#vdef
This cookie stores information about visits such as how the user came to the Which? Mobile site and the number of visits the user has made.
_#uid
This cookie stores a user identifier (only within a site).
_#slid
This cookie stores the unique sale ID, which is a unique identifier given to each sale so that each sale can be distinguished from another.
_#clkid
This cookie is a unique identifier for a click that generates a landing.
_#lps
This cookie is used to prevent secure information being recorded.
_#tsa
This cookie stores the referrer details to avoid duplicate Landing events.
_#env
This cookie flags whether the environment variables (such as screen size, browser etc) need to be collected again.
Our which.co.uk/switch cookies
These cookies are set by our Which? Switch technology partner, Google Analytics:
utma, utmb, utmc, utmz
These cookies allow Google Analytics to track the usage of the site.
These cookies are shared with our which.co.uk site and are set by our Which? Switch technology partner, Omniture:
S_pers, s_sess, s_vi
These cookies are used to collect our web analytics data – such as visits per page. This is then sent to our technology partners Omniture who provide us with statistical analysis.
ARPT
This is a technical ‘session’ cookie shared set by our website to share the number of visitors we get on our site between web servers. This is so the site does not get overloaded and can perform at its optimum potential.
JSESSIONID
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting.
Our whichmortgageadvisers.co.uk cookies
These cookies are set by our Which? Mortgage Advisers technology partner, the OTHER media:
JSESSIONID
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting.
source_code
If you have come to us by clicking on a Which? advert; such as a Google advert, a link to our website on one of our partner sites or an email, this cookie will be set on your browser when you click through so we know where you came from – and which adverts of ours are proving popular.
offer_code
If you’re not already a member of Which?, this cookie lets us know which product or offer was displayed in the Which? advert you are responding to. This ensures you see the correct information online and receive the correct products or services you have requested.
s_pers, s_sess, s_vi and fpc10001177276537
These cookies are used to collect our web analytics data – such as visits per page.
fpc10003085618
This cookie is used to collect our web analytics data – such as visits per page.
jtid_www_computing , jtid_www_gwft, source_code_www_gwft, jtid_www_money, source_code_www_money, source_code_www_legalservice, source_code_www_magazine
These cookies may be set to identify the source of your visit to our magazine registration pages from search engines or affiliate marketing partners etc. to ensure you get the correct offer.
ARPT
This is a technical ‘session’ cookie set by our website to share the number of visitors we get on our site between web servers. This is so the site does not get overloaded and can perform at its optimum potential.
JEB2, CfP
This is a unique ID for the browser, so we know if an ad has already been placed. (.adtech.staticwhich.co.uk)
ASP.NET_SessionId, stcs2653, stc2653, tst, ctst S
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting. (.tracking.dc-storm.com).
SSO_AUTH
This cookie supports to link subscriptions between Which? platforms
Our www.staticwhich.co.uk cookies
s_pers
This cookie is used to collect web analytics. This information is sent to our technology partners Omniture who provide us with statistical analysis.
ARPT
This is a technical ‘session’ cookie set by our website to share the number of visitors we get on our site between web servers. This is so the site does not get overloaded and can perform at its optimum potential.
Our search.which.co.uk cookies
uid
This cookies is set by our search engine to uniquely identify your computer’s search session
Our which-local.co.uk cookies
NSC_xijdi-mdpbm.dp.vl-IUUQ
A technical cookie set by our website to share website usage load between our web servers.
ASP.NET_SessionId
This cookie is a ‘session cookie’ and tells us that you are actively using our site. This way we can always know, at any given time, how many users we have visiting.
cookieenabledcheck
This cookie checks to see if your browser can accept cookies. If it is set to reject all cookies, this cookie will let us know so we can send you an error message to let you know that our website cannot function properly without enabling cookies.
fpc10003085618
This cookie is used to collect our web analytics data – such as visits per page. This is then sent to our technology partners Omniture who provide us with statistical analysis.
HideGettingStarted
If you select the option on the home page to hide the ‘help’ panel, this cookie will ensure it remains hidden each time you re-visit the site.
Our secure.securewhich.co.uk cookies
jtid_www_gwft, source_code_www_gwft, jtid_www_money, source_code_www_money, source_code_www_legalservice, source_code_www_magazine
These cookies may be set to identify the source of your visit to our magazine registration pages from search engines or affiliate marketing partners to ensure you get the correct offer.
Adtech.de
rsi_segs
This cookie identifies the offer / promotional segment.
rsi_ct
This cookie is a timestamp (when the ad was seen)
JEB2
This cookie is a unique ID for the browser, so we know if an ad has already been placed.