is it worth it for the first few months after purchasing a new car?

I'm being offered about Ł120 p/m for the car by the dealer after the first month which is about twice as much as warranty direct are offering..

so is it worth it for what.. 6months after purchase?

I mean its a lot of money to have, and with 112k on the clock I am slightly worried about all the story's of peoples chains and belts and turbos buggering up.

Yes? No?

Anywhere better to go?