Cookies can be used to store users preferences and other information about visits and actions. Cookies come in two flavours, first-party and third-party. First-party cookies are set by the site or application you are visiting and can only be read by them. Third-party cookies are set by a different web site or application than the one you are currently visiting. They are generally used to track users between different web sites and applications and to display more relevant advertising. Additional cookie information is available from our main cookies page.
The following tables explain the cookies used, what they are for and when they expire:
First-party cookies
| Name | Domain | Expires | Category | Source | Purpose |
|---|---|---|---|---|---|
|
x-ms-cpim- cache|rditfoltkeiy15ankf2hxq_0 | .ordnancesurveyidentity.b2clogin.com | Session | Strictly necessary | Microsoft |
Used by Azure B2C to manage user SSO sessions, user authentication and to prevent Cross Site Request Forgery (CRSF). |
|
x-ms-cpim-trans | .ordnancesurveyidentity.b2clogin.com | Session | Strictly necessary | Microsoft | Used by Azure B2C to manage user SSO sessions, user authentication and to prevent Cross Site Request Forgery (CRSF). |
|
x-ms-cpim-csrf | .ordnancesurveyidentity.b2clogin.com | Session | Strictly necessary | Microsoft | Used by Azure B2C to manage user SSO sessions, user authentication and to prevent Cross Site Request Forgery (CRSF). |
|
CookieControl | .b2clogin.com | 3 months | Strictly necessary | CIVIC | Used by Cookie Control to store cookie preferences. |
Third-party cookies
None
Last audited on: 13 June 2025