Anyone know if I can pick this sort of stuff up locally rather than internetty?

I think the closest to you would be Garstang auto-jumble if the guy's turn up! But that is not until the 24th.

So Internet would likely be you friend.

Adrian

C O H Baines Tunbridge Wells Kent, they do all sorts of rubber extrusions for motor, caravan, marine use

Thanks guys.

try m and m classic car components 01406 422993 they have loads of trim big small gaskets big small

Try Seals + Direct at Rubber linky