I recently had a hair transplant at the London Hair Clinic in South Kensington, and I have been really happy with the results. The staff was professional and the clinic was clean and modern. The procedure itself was around £5000, but they did offer financing options which helped make it more manageable.
However, one thing to consider is that the recovery process can be a bit uncomfortable, with some swelling and scabbing for the first couple of weeks. Overall, I would recommend the London Hair Clinic for anyone considering a hair transplant in London.