By city
London 19Manchester 15Leeds 14York 12Cambridge 11Birmingham 11Bradford 11Newcastle upon Tyne 11Peterborough 11Bedford 10Northampton 10Glasgow 10Cheltenham 10Edinburgh 10Plymouth 9Sheffield 9Stoke-on-Trent 8Hull 8Swindon 8Bristol 8Liverpool 8Nottingham 8Southampton 8Leicester 8
| Name | Category | Address | City | Opening times |
|---|---|---|---|---|
| jb installs ltd | Mechanical contractor | Unit 8, Bull Royd Industrial Estate | Bradford | Mon–Fri 08:00–17:00 |
| JDF Maintenance (Huddersfield) Limited | Gas engineer | 43 Crosland Hill Rd | Huddersfield | Mon–Fri 07:30–17:00 |
| JJ Rowney gas & heating engineers | Plumber | Holmefield 32, Station Rd | Doncaster | Mon–Wed 08:00–17:00 |
| JMES Services | HVAC contractor | 6 Grange Bank Cl | Huddersfield | Thu Open 24 hours |
| JPM Plumbing and heating | Plumber | 23 Heol Y Pibydd | Swansea | Mon–Fri 08:30–18:00 |
| JRM Plumbing & Gas Ltd | Central heating service | 53 Scholes Ln | Bradford | Mon–Fri 08:00–17:00 |
| Just A Phase Limited | Interior construction contractor | 677 High Rd | London | Mon–Sat 07:30–17:00 |
| KC Plumbing & heating services | Gas engineer | 97 Normanton Rd | Derby | Mon–Sat 09:15–17:00 |
| Kitchen and bathrooms fitter Northampton (Signature) | Bathroom renovator | 21 Reedhill | Northampton | Daily Open 24 hours |
| KJP Plumbing & Heating - Powerflush Specialists | Plumber | 4 Broadleaf Cl | Southampton | Daily Open 24 hours |
| Krown Construction | Property maintenance | Acorn House, 381 Midsummer Blvd | Milton Keynes | Daily 08:00–20:00 |
| L P Heating and Plumbing ltd | Air conditioning contractor | 5 Rossington Way | Southampton | Mon–Fri 08:00–17:00 |
| Landlord Safety Certificate | Certification agency | Unit 9, Maybank Industrial Estate, 109 Maybank Rd | London | Fri–Sat 09:00–18:00 |
| Lanes Drainage Services UK - Manchester | Septic tank service | 300 Lansdowne Rd | Manchester | Daily Open 24 hours |
| Laressi Mechanical and Electrical | Air conditioning contractor | Suite 4, Joseph King House, Norfolk, Southwell Rd | Norwich | Mon–Fri 08:00–17:00 |
| LCA Maintenance Services Limited | Plumber | Singer Court | Bedford | Mon–Thu 07:00–20:30 |
| Leefe Plumbing | Plumber | 95 Beech Ave | York | Mon–Fri 08:00–17:30 |
| LG Bullen Plumbing & Heating | Gas engineer | Maggie O'Neill Resource Centre, 433 Liverpool Rd | Liverpool | Mon–Sat 08:00–17:00 |
| Llandaff Heating | Plumber | 9 Victoria Ave | Cardiff | Daily Open 24 hours |
| London Water Filter | Water softening equipment supplier | 21 Upper Tulse Hill | London | Mon–Thu 09:00–17:00 |
| Longlife Heating & Cooling | HVAC contractor | 73 Chesterton Rd | Derby | Thu 08:00–18:00 |
| LPS Limited | Central heating service | 20 Otley Rd | Leeds | Mon–Thu 08:00–17:00 |
| M W Plumbing & Heating Contractors Ltd | Plumber | MW Plumbing & Heating Contractors Ltd, Arrow Close Business Centre, Arrow Cl | Newcastle upon Tyne | Mon–Tue 08:00–17:00 |
| M1 Drainage Service | Drainage service | Bletchley, Milton Keynes MK3 6NA | Milton Keynes | Mon Open 24 hours |
| Mamoss Gas, Heating And Electrical | Central heating service | Unit C, 279 Bethnal Grn Rd | London | Daily Open 24 hours |
| Master Plumb | Gas engineer | 42 Totley Brook Rd | Sheffield | Mon–Fri Open 24 hours |
| MDS Heating | Plumber | Rutherford House | Warrington | Daily Open 24 hours |
| Medi-Plumb Installations Ltd (MPI) | Industrial gas supplier | Gelderd Cl | Leeds | Mon 08:00–17:00 |
| Mekkmaster Heating Ltd | Gas engineer | 6 Ferrymans Quay | Southampton | Mon–Fri 08:00–18:00 |
| Metcor Pumps | Water pump supplier | Anglo House 1 Postley Road, Woburn Road Industrial Estate, Kempston | Bedford | Fri–Sat Open 24 hours |