I've been a member of Cannons in Wandsworth for just over a year and I love it there. My usage is mainly of the gym which has a huge amount of equipment. The room is air conditioned, there are loads of tvs and all in all it's a very pleasant place to work out. Every time you use a machine you log in with a password and it clocks how much you've done and sends you regular emails telling you you've burned enough calories to eat 45 ice cream sundaes or lifted the equivalent of 10 Indian elephants. Very good for encouraging you to go more often! You can also book in for personal training sessions to improve your progress. There's a lovely pool which I take my kids to at the weekends - there are set times when the children are allowed in. And there are loads of different classes for the children as well as adults, everything from Pilates to yoga and water aerobics. My daughters do a dance class on a Friday evening which they really enjoy.