Who to sort out rattly interior, Bournemouth-ish?

[Johnnytheboy]

My Focus has a very rattly interior, but the icing on the cake is a new, and very annoying, squeak in the back of the driver's seat.

I don't really know what kind of place you get stuff like this dealt with, any advice/recommendations?

I work near Wimborne, so somewhere within reasonable distance of there would be ideal.

[Johnnytheboy]

Boing, anyone?