think after a certain date has past u can "buy" them off ur liscence from the police but my mate just did it with his focus n it cost him a bundle!
defo declare them as if insurance check up on your liscence at a later date and find you have points i believe u can be done on insurance fraud for not declaring them (few people been caught with this that i know and they got a pretty big shafting from teh cops on it

)