I rebooked with my previous stylist because I had such a good experience. Conveniently located in Spitalfields if you work in the area. Doesn't have the coziest atmosphere and can sometimes be very loud, but if you go when it's quiet it's fine.
I've been a client for over 5 years and they never disappoint! You can be 100% sure that whoever cuts your hair will be super professional and friendly. I've never had to complaint, they know what they're doing.
Also, very good for money.