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 |
|---|---|---|---|---|---|
|
CookieControl | explore.osmaps.com | 3 months | Strictly necessary | CIVIC |
Used by Cookie Control to store cookie preferences. |
|
_ga_TN90H9PXSK | explore.osmaps.com | 57 weeks | Strictly necessary |
Used by Google Analytics to identify and track users. | |
|
_ga | explore.osmaps.com | 57 weeks | Strictly necessary |
Used by Google Analytics to identify and track users. | |
|
x-ms-cpim-csrf | .ordnancesurveyidentity.b2clogin.com | Session | Strictly Necessary | Microsoft |
Used to confirm user login details to explore.osmaps.com |
|
x-ms-cpim- sso:ordnancesurveyidentity.onmicrosoft.com_0 | .ordnancesurveyidentity.b2clogin.com | Session | Strictly Necessary | Microsoft |
Used to confirm user login details to explore.osmaps.com |
|
AMP_06f9c7f1e0 | explore.osmaps.com | 1 Year | Performance | Amplitude |
Identify and track users for site analytics |
|
AMP_MKTG_06f9c7f1e0 | explore.osmaps.com | 1Year | Performance | Amplitude |
Identify and track users for site analytics |
|
QSI_SI_3HMy2Q42ttYKfZA_intercept | explore.osmaps.com | 3 Months | Targeting | Qualtrics |
Used to determine whether or not we should display a survey on repeated user visits within a period |
Third party cookies
None
Last audited on: 26 November 2025