The Gym Group London Stockwell in Lambeth | Facilities,... The Gym Group London Stockwell is a 24-hour gym in Lambeth, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: 15 Lett Rd, London SW9 0AFOfficial website Things to do today Things to do tomorrow This weekend Free events Family events Kids activities in London Live music in London Live sports in London Cinemas in London Gyms in London All London events