Stu there are several correspondence courses which given your location would probably suit you. Not sure which are the best, you might have to pose the question on YBW.com
Rules for the boat are on the RYA Website and other requirements for the exam.
However you will need to learn to drive a boat first and get some hours in not just sitting around in the Norf Sea drinking tea
Oh and Viv says when are you shifting this 'orrible white console out of her garden