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

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 them.

How we use cookies

Measuring website usage (Google Analytics)

We use Google Analytics to collect information about how people use this site. We do this to make sure it’s meeting our users’ needs and to understand how we could improve the site.

Google Analytics stores information about what pages you visit, how long you are on the site, how you got here and what you click on. We do not collect or store your personal information (e.g. your name or address) so this information cannot be used to identify who you are. We do not allow Google to use or share our analytics data.

Details of your IP address (the unique number assigned to each device connected to the internet) are collected by Google Analytics, but not passed on to us or anyone else: the information is only used to give us an idea of where our visitors come from.

The following cookies are set by Google Analytics:

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
utmx randomly generated number 2 years
utmxx randomly generated number 2 years
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