Cookies are small files that are placed on your computer and record specific interactions between you and this website. We use cookies to handle logged in registered users and improve the performance of the website. Below is more detail about the cookies we use, what they record and who the information is shared with. You are of course free to disable cookies.

Functionality lost by disabling cookies

If you disable cookies some functionality will not be available, namely:

  • you will not be able to log in
  • you may experience degraded website performance.

Cookies set by us

When you visit our website, we may set the following cookies:






has_js  cookie stores information on whether your browser has javascript enabled.

When you close your browser
Drupal (, which is our content management system, uses Drupal.tableDrag.showWeight and Drupal.toolbar.collapsed cookies to store user interface preferences. Drupal.tableDrag.showWeight: 1 year

Session cookie, name composed of 37 characters (letters and digits)

This is an essential cookie, used to manage interactions with logged-in users.

When you close your browser


How to disable cookies

Most web browsers allow some control of most cookies through the browser settings. To find out more about cookies, including how to see what cookies have been set, visit or

Find out how to manage cookies on popular browsers:

Google Chrome

Microsoft Edge

Internet Explorer




Other web browsers

To find information relating to other browsers, visit the browser developer's website.

Page last updated: 28/07/2020