Topnotch Gyms Soho in City of London | Facilities, hours &... Topnotch Gyms Soho is a gym in City of London, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: Dufour's Pl, London W1F 7SPOfficial 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