| Active Plumbing & Heating Ltd | 0800 389 6538 | | 33 Thurloe Walk, Grays, RM17 5AN |  Map & Directions |
| C & S Heating | 020 8262 2957 | | Rear Office, 139 Becontree Avenue, Dagenham, RM8 2UL | | Map & Directions |
| Economic Heating | 01708 375998 | | 13 Chelsworth Drive, Romford, RM3 0ES | | Map & Directions |
| Advanced Tap Plumbing | 020 8553 4069 | | 32 Links Avenue, Romford, RM2 6ND | | Map & Directions |
| Reed A E & Son | 01708 742529 | | 9 Heather Avenue, Rise Park, Romford, RM1 4SL | | Map & Directions |
| H & H Contracts | 01708 342118 | | 83 Squirrels Heath Road, Romford, RM3 0LR | | Map & Directions |
| Lpg Plumbing Ltd | 020 8599 1908 | | 20 Saville Road, Romford, RM6 6DT | | Map & Directions |
| Argonaut Heating Ltd | 01708 738990 | | 105 Collier Row Road, Romford, RM5 2AT | | Map & Directions |
| R J Central Heating Services | 01708 453348 | | 74 Rosebank Avenue, Hornchurch, RM12 5QS | | Map & Directions |
| Multi Pipe Ltd | 01708 680380 | | Unit 4, 1 Purfleet Industrial Park, Thurrock Commercial Centre, Aveley, South Ockendon, RM15 4YA | | Map & Directions |
| Brenfield Ltd | 01708 471344 | | 261 Wingletye Lane, Hornchurch, RM11 3BT | | Map & Directions |
| R & S Heating Services | 020 8599 3266 | | 58 Lexden Drive, Romford, RM6 4TJ | | Map & Directions |
| T W Chalmers-Stevens | 020 8593 5970 | | 61 Surrey Road, Dagenham, RM10 8ET | | Map & Directions |
| Bowmite Services Ltd | 01708 521700 | | 49 Upminster Road South, Rainham, RM13 9YS | | Map & Directions |
| K Wagstaff & Sons Ltd | 01708 442173 | | 136 Upminster Road, Hornchurch, RM12 6PL | | Map & Directions |
| Odyssey Contracts Ltd | 01708 720126 | | 23 Frinton Road, Romford, RM5 2EL | | Map & Directions |
| Galaxy Gas Co | 01708 448095 | | 3 Devonshire Road, Hornchurch, RM12 4LG | | Map & Directions |
| Institute of Plumbing | 01708 472791 | | 64 Station Lane, Hornchurch, RM12 6NB | | Map & Directions |
| Heatech Building Services Ltd | 01708 688698 | | The Lodge, Stapleford Aerodrome, Stapleford Tawney, Romford, RM4 1SJ | | Map & Directions |
| Olympic Plumbing Services | 01708 740318 | | St. Rothwell, 111 Risebridge Chase, Romford, RM1 4PR | | Map & Directions |
| Coronet Heating Services | 01708 553860 | | 91 Briscoe Road, Rainham, RM13 9QG | | Map & Directions |
| P J Myers & Sons Ltd | 01708 722521 | | 58 Collier Row Lane, Romford, RM5 3BB | | Map & Directions |
| Graham Jones & Sons | 01708 229058 | | 210 Corbets Tey Road, Upminster, RM14 2BJ | | Map & Directions |
| Precise Heating Services | 01375 370777 | | 175 Whitmore Avenue, Grays, RM16 2HT | | Map & Directions |
| Plumbing Expert | 020 8508 0055 | | 10 Paines Brook Way, Romford, RM3 9JP | | Map & Directions |
| K G Wagstaff | 01708 473043 | | Upminster Bridge, Hornchurch, RM12 6PL | | Map & Directions |
| K M Plumbing & Heating | 020 8595 4578 | | 28 Parkside House , Bell Farm Avenue , Dagenham, RM10 7AU | | Map & Directions |
| Jet Plumbing & Heating | 01708 751516 | | 51 Lawns Way, Romford, RM5 3TH | | Map & Directions |
| Melvin E Forrest | 01375 891585 | | 21 Parkway, Orsett, Grays, RM16 3HA | | Map & Directions |
| Universal Heating | 01708 449001 | | 51 Ravenscourt Grove, Hornchurch, RM12 6HJ | | Map & Directions |
| Frank Fisher | 020 8252 7108 | | 91 Second Avenue , Dagenham, RM10 9EA | | Map & Directions |
| Aquatek Plumbing & Heating Ltd | 01708 386008 | | 122 Retford Road, Romford, RM3 9NH | | Map & Directions |
| A1st Boiler & Heating Services Ltd | 01708 755510 | | 10 East Road, Rush Green, Romford, RM7 0BL | | Map & Directions |
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