Morris Minor Owners Club

Does anyone know of someone in the London area who can patch up a pair of Traveller front doors? They've got some rust around the door where the window slides up and down and a small amount of rust at the bottom. The doors are white.
I'm looking for a reasonable price for the work. It's more of a patch up job that I'm after, until the doors can be replaced.
Cheers
Fablovely