Laz Fitness Performance in Barnet | Facilities, hours & reviews Laz Fitness Performance is a gym in Barnet, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: 47b Byng Rd, Barnet EN5 4NWOfficial 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