Not worth £20. Gel removal was fine, though not really any better than I could have done myself at home, and then I paid £10 for one coat of strengthening nail varnish, which I could have got for £5 in Boots.
One of the best waxes I've had in London. Sabrina was very efficient, professional and friendly, and made the waxing experience as painless as possible. I also like the overall atmosphere of the salon. Will definitely be back!