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Our website uses cookies to distinguish you from other users of our website.  This helps us to provide you with a good experience when you browse our website and also allows us to improve our site. A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer if you agree.  Cookies contain information that is transferred to your computer's hard drive. By continuing to browse the site, you are agreeing to our use of cookies.

We use the following types of cookies, neither of which identify you personally.

• Essential cookies.  These are required for the operation of our website.  They include, for example, cookies that enable you to log in to secure areas of our website, use a shopping cart or make use of e-billing services.

• Analytical/performance cookies.  These allow us to, for example, recognise and count the number of visitors to our website and to see how visitors move within it.  This information helps us to improve the way the website works, for example, by ensuring that users more easily find information for which they are searching.

You may block cookies by activating the setting on your browser that allows you to refuse the setting of all or some cookies.  However, if you use your browser settings to block all cookies (including essential cookies) you may not be able to access all or parts of our site.