Our website uses cookies. A cookie is a small file of letters and numbers that we put on your computer. These cookies allow us to distinguish you from other users of the website which helps us to provide you with a good experience when you browse our website and also allows us to improve our site.

Your consent 

When you first visited this website, we presented you with a message explaining that we use cookies and invited you to read more about them here. We recommend you allow the cookies we set by this website as they help us provide a better service and make our website easier to use.

You can change the settings on your web browser to disallow them all. If you set your browser to refuse all cookies, some websites will not work in the way that you expect them to.

You can find out more about cookies by visiting:

The cookies we use

These are the cookies that we currently use on our site:

Cookie summary Identifier(s) What are they for? How necessary are they?
Cookie information banner _DMBC Controls the appearance of the cookies information banner that pops up when you first visit the site. This cookie is set when a user closes the banner so that the banner does not appear on subsiquent pages. We need to show you this message so you know about our cookies.
Load balancing ARRAffinity
This cookie is set by websites run on the Windows Azure cloud platform. It is used for load balancing to make sure the visitor page requests are routed to the same server in any browsing session. This is strictly necessary to provide the best performance of the site.