Recommend me a colour consultant in London

[FreiasBathtub]

Had a little search and can't find a recent thread so hoping for some up-to-date ideas.

Ideally in central/North/East London. I am a complete novice so suggestions from those who've had some experience very gratefully received. This is a bit of a treat for me - I've just gone back to work after my first baby and am trying to 'find' the bit of me that's not a mum again (if that doesn't sound too wanky!) so I want to get it right.

Cheers!