i am looking for a low priced gym in central london
the cheapest options ive found are
40 pounds/month at the waterloo campus of kings college in london
http://www.kclsu.org/services_k4.php
35 pounds/month at the straddler sports center at the city university in london
http://www.city.ac.uk/sportscentre/index.html
both prices are for members of the public and are close to metro and bus stops.