Performance cookies collect information about how visitors use a website. These cookies do not collect information that can identify a user of the site. All information these cookies collect is aggregated and therefore anonymous. The information collected is only used to improve the performance of the site.</p> <p>We use performance cookies for:</p> <ul> <li>providing statistics about how people use our site, e.g. the number of visitors to a page</li> <li>identifying any errors that occur so that we can improve our website</li> <li>testing different designs of our website.