I just wanted to recommend One element training to anyone who is looking to get out and do some exercise.
I go to the sessions on Wandsworth Common and Battersea Park, I cannot recommend it highly enough. Tom and his team of talented Personal trainers run hour long group sessions, that will push you whilst being fun with a great bunch of people.
I have signed up to thier reset program for January, and have just completed my first 10K run thanks to their training.
You can contact them at http://www.one-element.co.uk/ come along and have a go you get your first session free and I assure you, you will get hooked.
Its much more fun than the blokes in camoflauge....
The Invisible Painter