tantricmassagelondon.com have brilliant girls. I've seen them all except Celeste, and each is better than the other.
tantricpleasure.co.uk I've tried Camilla and Antonia. Camilla is slightly above average in terms of looks, very petite with huge natural tits if anyone's into that, so her b2b was phenomenal. Antonia is by far one of the most beautiful women I've seen in my entire life, supermodel type looks and body, also brilliant.
That being said, the former is more of an actual massage than the latter. Uma from tantricmassagelondon.com does wonders for the back.