Jessica does a great Brazilian Blow Dry - she is super precise and thorough, and really knows what she's doing (she does it to her own hair so she understand what matters!). They also make sure you're comfortable throughout.
I moved houses and had keratin treatments done at two other London salons nearer me (one of which claims to be a specialist), but neither did the treatment as well as Jessica so now I come back North just to visit the salon! 5 stars :)
Good although i had to wait a bit for my treatment. Haven't washed out the Brazilian blow dry yet but it hasn't made my hair greesy or smell so easy to keep in!