This site uses cookies

To make this site simpler, we sometimes place small data files on your computer. These are known as cookies. Most websites do this.

They improve things by:

  • remembering settings, so you don't have to keep re-entering them whenever you visit a new page
  • remembering information you've given (e.g. your login) so you don't need to keep entering it
  • measuring how you use the website so we can make sure it meets your needs

Our cookies aren't used to identify you personally. They're just here to make the site work better for you. Indeed, you can manage and/or delete these small files as you wish.

To learn more about cookies and how to manage them, visit Or please read on to find out more about how and where we use cookies.

Disable Cookies

If you do not want websites to place cookies on your computer, please click your browser icon below for details on how to disable cookies.

How we use cookies

This site uses cookies in several places – we’ve listed each of them below with more details about why we use them and how long they will last.

Enabling advance functionality

In order to provide our visitors with advanced functionality such as logging in, making purchases, saving preferences and so on, we use cookies to remember who each visitor is as they move between different pages of the site.

The following cookies are set to provide advanced functionality
Name Typical Content Expires
sessionid randomly generated uuid when you close your browser
cookiemsg dismiss 1 year

Making you more secure

In order to protect our users from other sites masquerading as them and submitting requests to their account without their knowledge, we use a security cookie to protect against Cross Site Request Forgery.

The following cookie is set to provide advanced functionality
Name Typical Content Expires
csrftoken randomly generated token when you close your browser

Measuring website usage

We use web analytics to collect information about how people use this site. We do this to make sure it’s meeting its users’ needs and to understand how we could do it better.

Analytics store information about what pages you visit, how long you are on the site, how you got here and what you click on.

The following cookies are set by our analytics providers:
Name Typical Content Expires
_utma randomly generated number 2 years
_utmb randomly generated number 30 minutes
_utmc randomly generated number when you close your browser
_utmz randomly generated number and information on how the site was reached (e.g. direct or via a link, organic search or paid search) 6 months
is_returning Boolean value which marks if you are a returning visitor 5 years
mp_…_mixpanel Randomly generated uuid and information on referring domain 1 year

Privacy policy:

Our Privacy Policy  should be read in conjunction with this explanation of how this site uses cookies.