The Unit Gym in Hillingdon | Facilities, hours & reviews The Unit Gym is a gym in Hillingdon, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: Victoria Ln, Harlington, Hayes UB3 5EWOfficial 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