In the past year I have twice tried to use Timpson in S Ken Tube:
1. they repaired a pair of good loafers so badly that the soles came off within a week, and then refused to repair them when I took them in again unless I paid again.
2. I asked how much to get my watch battery changed, (a simple battery watch that takes 3 minutes) and they replied £55 with the excuse that there is an obbligatory water proof testing, even if I don't ever take it into the water. I then found a local watch man who did it for £4 and no B.S.
They're expensive, insolent and clearly not very good at what they do. On top of this they're part of a large chain, not a local shop like they try to make themselves out to be.
Timpson provide a number of services including shoe repairs, key cutting and engraving in certain outlets. This branch also offers watch repairs and leather re-stitching.