I've been to Mm Bubbles a few times now and found my most recent experience a little disappointing, just because my brazilian wax was much less thorough than usual.
This was a great value wax; it only took 25 minutes and she was quick and thorough about it (though a bit rough as I did have some minor bruising). The downside was the woman's pushy up-selling of their packages. Pretty awkward when you're lying there getting waxed and you're being told at length about how you should pay them £50 in advance for treatments. And then I got the same spiel all over again as I was trying to leave the salon. In summary: great value but pushy staff
I found out about MM Bubbles on Treatwell a couple of years ago, and I've gone back many times since. The location is very convenient, just a short walk from Earl's Court tube station. The staff are always friendly, polite and accommodating and the salon is clean and tidy. The wax itself is always less painful than waxes I have had before, so I would definitely recommend this place!