You mean amazon.co.uk (click here) - the UK site, don't you?
* "Do I Have to Register?" click here, or
* "How to Create an Account" click here
To contact them:
* Via email click here & press the 'Skip sign in' button.
* By phone 0800 279 6620 or 0208-636-9200 (from click here)
Good luck, G