Cookies policy

Cookies policy

What are cookies?

Cookies are small files of data that are sent from a website you visit to your browser and are stored on the device you are using to access the internet.

Why do we use cookies?

Cookies perform a variety of functions that allow our websites to work, help us improve their performance and provide the best user experience.

What cookies do we use?

You can find information about the individual cookies we use and the purposes for which we use them in the table below:

_ga A unique identifier used to distinguish different users in Google Analytics Optional
_gat Used to throttle the request rate to Google Analytics Optional
_pk_ref* Matamo¶ anonymous user tracking‡ Optional All
_pk_cvar* Matamo¶ anonymous user tracking‡ Optional All
_pk_id* Matamo¶ anonymous user tracking‡ Optional All
_pk_ses* Matamo¶ anonymous user tracking‡ Optional All


We use Matomo ( to help us understand how visitors navigate our websites. It uses analytics cookies to collect information and report website usage statistics without personally identifying individual visitors. The information is processed and stored onsite in our data centre.

Third-party cookies

To support our research and public engagement, we may embed photos and/or video content from third party websites.

When you visit a page with photos or video content embedded, you may be presented with cookies from these third party websites. We do not control the dissemination of these cookies. You should check the relevant third party website for more information about these cookies.

How to control or disable cookies

To manage your cookies settings, please click here.

For general information about cookies, and how to control and disable them in your web browser, please visit

Our websites honour browsers that have the “do not track” (DNT) feature set. Further information can be found at

How to tell us about changes

If you have any questions about data protection or require further information, please email