By city
London 16Leeds 10Milton Keynes 9Glasgow 9Swindon 8Bradford 8Cardiff 8Warrington 8Edinburgh 8Nottingham 8Birmingham 7Preston 7Cambridge 7Manchester 7Norwich 7Newcastle upon Tyne 7Liverpool 6Stockport 5Reading 5Sheffield 5Hull 5Leicester 5Bedford 5Brighton 5
| Name | Category | Address | City | Opening times |
|---|---|---|---|---|
| Gas Care NorthEast Ltd | Bathroom renovator | 5 Sedgemoor | Newcastle upon Tyne | Mon–Fri 08:00–16:00 |
| Gas Smart Heating Ltd | Gas Safe Engineers | Gas installation service | 29A, 30 Castle St | Brighton | Mon–Fri 08:30–22:00 |
| Gastech Pro Ltd | HVAC contractor | 2 Flemish Rd | Manchester | Daily Open 24 hours |
| GD Plumber Heating Gas Services Harborne Birmingham | Plumber | 69 Fellows Ln | Birmingham | Mon–Sat 06:00–22:00 |
| GH Heating Services Ltd | Gas engineer | 22 Harwich Rd | Colchester | Mon–Tue Open 24 hours |
| GJC Plumbing and Heating Ltd | Gas engineer | 48 Pilley Cres | Cheltenham | Mon–Fri 08:00–17:00 |
| Glasgow Boiler Experts - Installation, Service and Repair | Central heating service | 34 Parklands View | Glasgow | Mon–Fri 08:00–18:30 |
| Glenco Plumbing Milton Keynes | Plumber | 314, Midsummer Court, Midsummer Blvd | Milton Keynes | Thu Open 24 hours |
| GOS Heating Ltd | Plumber | First Floor, 47 Egerton Rd | Preston | Thu Open 24 hours |
| Green Vision Plumbing And Heating LTD | Gas engineer | 81 Penny Mdw | Manchester | Mon–Fri 08:00–23:00 |
| Greenwoods Heating, Plumbing & Renewables LTD | Gas engineer | 165 Moss Ln | Preston | Mon–Fri 08:00–17:00 |
| GSG Plumbing and Heating | Gas engineer | 37 Dorchester Ave | Cardiff | Daily Open 24 hours |
| H&R Energy Solutions Ltd | Insulation contractor | Unit 4, 3 Siding Ln | Glasgow | Mon–Fri 09:00–18:00 |
| H3GS Heating & Cooling | Gas engineer | 1st Floor, Romer House, 132 Lewisham High St | London | Daily Open 24 hours |
| Heat Lord - Central Heating Services | Central heating service | 20 Garston | Milton Keynes | Daily Open 24 hours |
| Heating Dynamics | Gas engineer | 252 Crofthill Rd | Glasgow | Daily 08:00–22:00 |
| Heatpoint Plumbing & Heating | Plumber | 111 George Ln | London | Mon–Sat 07:00–21:00 |
| Heatsave Services Ltd | Plumber | 1 Millbrook Fold | Stockport | Mon–Fri 07:00–21:00 |
| HeatSync Systems | Gas installation service | 45 Woodfall Rd | London | Daily Open 24 hours |
| HeatWorks with Liam | Gas engineer | 49 Brecksfield | York | Mon–Thu 08:00–18:00 |
| HewettHeat | Gas engineer | 38 Malvern Rd | Coventry | Mon–Fri 09:00–17:00 |
| Hollowell Heating Ltd | Boiler supplier | 56 Longworth Rd | Bolton | Mon–Fri 08:00–17:00 |
| HomeAssist.services | Gas installation service | 41 Osborne Rd | Newcastle upon Tyne | Thu 09:00–16:30 |
| House Maintenance Liverpool L1 | Property maintenance | Allerton road | Liverpool | Thu 08:30–23:00 |
| HRC Construct Ltd | General contractor | 13 Turnham Grn | Swindon | Mon 08:00–17:00 |
| I-Fix Gas & Heating | Gas engineer | 39 N Park Rd | Birmingham | Daily Open 24 hours |
| Ideal Plumbing Services | Plumber | Vicarage Rd | Birmingham | Tue–Fri 07:00–21:00 |
| IFix Gas Glasgow | Gasfitter | 10 Barmulloch Rd | Glasgow | Mon–Thu Open 24 hours |
| Ignite Gas Care | Gas engineer | Unit A Rowan Ct, Green Ln | Leeds | Fri 08:30–17:30 |
| IJB Plumbing & Heating Ltd | Central heating service | ALBION MILLS BUSINESS CENTRE, Albion Rd | Bradford | Mon–Sat Open 24 hours |