This page was last updated on 24 June 2012.
To make full use of the features on our website, as well as to remember the actions you've taken from one visit to the next, your computer, tablet or mobile device will need to accept cookies, as we can only provide you with certain personalised features of this website by using them.
Our cookies, which are all stored on your computer, don't keep sensitive information such as your name, address or payment details: they simply hold the 'keys' that, once you've consented to their use, is associated with this information. However, if you'd prefer to restrict, block or delete cookies from this website, or any other website, you can use your browser to do this. Each browser is different, so check the 'Help' menu of your particular browser (or your mobile phone's handset manual) to learn how to change your cookie preferences.
Here's a list of the types of cookies we use, and what we use them for.
1. Strictly necessary cookies
These cookies enable you to move around the website and use its features, such as accessing secure areas of the website. Without these cookies services you have asked for, like shopping baskets or e-billing, cannot be provided.
2. Performance cookies
These cookies collect information about how visitors use a website, for instance which pages visitors go to most often, and if they get error messages. These cookies don't collect information that identifies a visitor. All information these cookies collect is aggregated and therefore anonymous. It is only used to improve how a website works.