| Centra Heat Gas Services - PO Box 509 - BL1 8XL |
| Chartered Heating - 156 Brownlow Rd - BL6 7EH |
| Gas-Tek Services Ltd - 128 Longsight - BL2 3HZ |
| Gaswise (NW) Ltd - 48 Little Stones Road - BL7 9UN |
| Lattice Energy Services Ltd - 22 Queensbrook - BL1 4AY |
| M & R Plumbing & Heating - 31 Brownlow Rd - BL6 7DW |
| STC Energy - Paragon Business Park - BL6 6HG |
| TRANSCO - Service Centre - BL1 4SR |
| Walker Adamson Co Ltd - 9-11 Prescott Street - BL3 3LZ |
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