Cookies are small text files. Many websites place cookies on your computer when you visit. Cookies are used to make websites work, or to make them work more efficiently, and to provide useful information to website operators. The following explains which cookies we use on our website and why.

Cookies used on this website

Google analytics utma; utmb; utmc; utmz

These cookies collect information about how visitors use our site. We use this information to prepare reports and improve the site. This information is anonymous. The information includes the number of visitors to the site, where visitors have come to the site from and the pages they visited.

You can opt out of being tracked by Google Analytics across all websites at

Site visitor data 


This is a session cookie and it allows the site to track pages visited to enable us to ensure that we can record your preferences and personalise your following visits to our site.


This cookie is used to identify repeat visits from a single visitor and it expires one year after the last page requested from the site by the visitor. We use this cookie to ensure we serve you with the latest content each time you visit our site. 


This cookie identifies the sequence of HTTP requests from a single user. This cookie expires when the visitor closes the web session. We use this cookie to understand your level of interest in a topic area and/ or related content. 

More information

Many web browsers allow users to control most cookies through their browser settings. More information about cookies, including details on viewing what cookies have been set and how to delete them is available at

Interested to find out more?