Seat Upholstery East London Advice Required

Hi All
The seat on my Triumph bonneville SE mag wheel has ripped and am considering getting it reupholstered. Never had this done before and having had a negative experience before due to a lack of knowledge thought I would see if I can prep myself to avoid this happening again.
So looking for some advice on the below please:
1) Anyone know of a seat upholsterer in the east/north London area they could recommend.
2) Anyone know the approx costs of getting a scrambler style seat redone in the existing diamond stitch pattern, colour black(needs to be waterproof).

thanks in advance all.

 

Thanks for the offer but I have still have my original seat stowed away for these types of situations.
Thought is much appreciated

 

Thank you FZR and Joe. I will give them a try

 

I ended up going with motorcycle seatworks in the end. £82 for the seat cover. Removed and installed the cover myself. A decent enough price for the quality.
Will advise on any long term issues if any pop up but looks good to begin with.