The Gym Group London Wimbledon in Merton | Facilities,... The Gym Group London Wimbledon is a 24-hour gym in Merton, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: 122 The Broadway, London SW19 1RHOfficial 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