Rosemary C.
Google
If you're blonde, or going blonde, this is the best hairdresser in London (clue's in the name!).
I've seen Naoya and Scarlett for both full bleach and highlights over the past two and a half years and they always get my hair to the exact colour I want - I couldn't recommend them more! Naoya even managed to get me back to platinum blonde from mid-brown with absolutely no damage after a disaster hair dye job at another salon. There is honestly nowhere else I would trust to do my hair from now on!
It may seem a bit pricey compared to budget salons or home dye kits, but it's 100% worth it to get the right result and keep your hair in good condition. I finally have really long, healthy bleach blonde hair - I never thought that would be possible, but thanks to Bleach it is! (and no they didn't pay me to write this haha, it's just that good).