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How we use cookies
Each group below explains what it is for and lists exactly what it stores in your browser. Everything except the strictly necessary group is off until you turn it on.
Changing your mind
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What it is for
Strictly necessary
Needed for the site to work at all. These cannot be switched off.
Preferences
Remembers choices you make, so the site behaves the way you left it.
Statistics
Helps us understand which pages are useful and where people get stuck, in aggregate.
Marketing
Lets us measure our advertising and show you relevant adverts.
Protects forms against cross-site request forgery. Without it, submitting a form fails.
Keeps temporary choices for the duration of your visit.
Remembers your cookie choices so you are not asked again on every page.
Local storage holding the same choices, read by the scripts that must wait for them.
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