Cookie Policy

What is a cookie?

A cookie is a small text file which is downloaded to your device when you visit a website. The information it contains is sent back to the originating website as you move between pages, or sometimes to another website which recognises the cookie. You can read more about cookies at: and; or watch a video at

What do we use cookies for?

The main cookies we use are called "session" cookies. These allow us to see how many people are currently using the site and to help logged-in users, e.g. those editing content, to navigate sensibly from page to page. We also use cookies from Google Analytics to help us analyse the use of the site. These do not collect any personal information. We do not use cookies which deliver advertisements, collect information about your browsing habits, or pass any personal data onto third parties. However, you can still refuse these cookies if you want to by disabling “third-party” cookies in your browser. There are also some 'external' links which leave the site completely, such as the link to Twitter at the bottom of each page. We do not take responsibility for any cookies that may be downloaded once you click one of those.

Which cookies do we use?

Below is a list of cookies that may be downloaded by this site, depending on which pages you visit.

__cfduid This cookie is associated with the security provider CloudFlare and is used to speed up page loading time. It also overrides any security restrictions based on the IP address the visitor is coming from. For example, if the visitor is in a coffee shop where there are a bunch of infected machines, but the visitor's machine is known and trusted, the cookie can override the security setting.

cb-enabled This cookie is associated with a free script which shows a cookie alert notice on a website. It is used to record when the user has dismissed the notice to prevent it re-appearing on return visits.

_ga This cookie is asssociated with Google Universal Analytics and is used to distinguishes unique visitors.

_gat This cookie is also associated with Google Universal Analytics and is used to limit the collection of data on high traffic sites. It expires after 10 minutes.

2017 MEI. Integral is produced by MEI, an independent charity committed to improving mathematics education. Registered Charity Number 1058911.