Help! Leaky roof - Can you recommend a good roofer?

[Kitty UK]

We need help to get a roofer to take a look at sealing round a window, putting flashing and sorting out some tiles / I think it's about two days work max. Can you recommend a stand alone builder or roofing contractor. Tried Dulwich roofing by because they are excellent they are busy :) any tips or advice greatfully received thanks Kitty x

[Calsug]

Russell - RJP roofing, he is fantastic used him a number of times and always carries out work to a very high standard