N4 Gas Limited

N4 Gas is a family-run gas engineering company serving North London. David Fleming started the business in 2006 as a sole trader; it has since grown into a 12-strong team of engineers and support staff.

The company installs boilers, repairs heating systems, services gas appliances, fits smart heating controls and works on domestic and commercial gas pipework. Its customers include homeowners, landlords, restaurants, offices, schools and managed properties.

N4 Gas offers genuine emergency cover around the clock. The company says boiler installations include a minimum five-year guarantee and repairs carry a 12-month warranty. It says its engineers explain the work and costs before customers decide.