| Edale Home Care Services Ltd | 01748 826175 | | 54 Racecourse Road, Gallowfields Trading Estate, Richmond, DL10 4TG |  Map & Directions |
| Gillys Trade Supplies | 01748 850901 | | 47 Racecourse Court, Gallowfields Trading Estate, Richmond, DL10 4TG | | Map & Directions |
| Peter Howe | 01388 764745 | | 5 Russ Street , Helmington Row, Crook, DL15 0RU | | Map & Directions |
| Haughton Plumbing Services | 01325 353397 | | 77 Winchester Way, Darlington, DL1 2UU | | Map & Directions |
| Chris Chapman Plumbing & Heating | 01325 358465 | | 2 Newlands Road, Darlington, DL3 9JL | | Map & Directions |
| Brian Howson | 01833 631492 | | Hollymount, Darlington Road, Barnard Castle, DL12 8HN | | Map & Directions |
| County Services | 01388 832612 | | 207, Toft Hill, Bishop Auckland, DL14 0JD | | Map & Directions |
| J S D Plumbing | 01609 748776 | | 2 Beech Close, Scruton, Northallerton, DL7 0TU | | Map & Directions |
| Scott | 01388 748222 | | Unit 3, Low Willington Industrial Estate, Willington, Crook, DL15 0UT | | Map & Directions |
| D A Dodsworth | 01609 770573 | | 13 Brompton Road, Northallerton, DL6 1DY | | Map & Directions |
| David Shields | 01969 623316 | | Passwood House, Redmire, Leyburn, DL8 4ED | | Map & Directions |
| A & A Plumbing & Heating | 01325 482156 | | 31 Newton Lane, Darlington, DL3 9EX | | Map & Directions |
| S G Abbott | 01325 469954 | | 116 Eastbourne Road, Darlington, DL1 4ER | | Map & Directions |
| Arg Plumbing | 01325 316100 | | 14 Paulinus Road, Newton Aycliffe, DL5 7AJ | | Map & Directions |
| B-Warm Ltd | 01388 605555 | | 21 Railway Street, Bishop Auckland, DL14 7LR | | Map & Directions |
| Dfe Plumbing & Heating | 01388 777652 | | 9 Vaughan Street, Shildon, DL4 1LD | | Map & Directions |
| R & J L Welburn | 01325 356151 | | 35 Saltersgate Road, Darlington, DL1 3DX | | Map & Directions |
| Peter Roe | 01388 607366 | | 57 Watling Road, Bishop Auckland, DL14 6RP | | Map & Directions |
| Derek Clement | 01325 720097 | | 6 Malvern Close, Hurworth, Darlington, DL2 2EU | | Map & Directions |
| On Tap Ltd | 01325 312345 | | 5-6 Burtree Road, Brighouse Courts, Aycliffe Industrial Park, Newton Aycliffe, DL5 6HZ | | Map & Directions |
| Stewart Chapman Ltd | 01325 354605 | | 123 Brinkburn Drive, Darlington, DL3 0JY | | Map & Directions |
| E D Bowen Plumbing & Heating | 01740 656791 | | 24 Ash Terrace, West Cornforth, Ferryhill, DL17 9NL | | Map & Directions |
| M E Bunton | 01388 746617 | | 1 Prospect Place, Sunnybrow, Crook, DL15 0NQ | | Map & Directions |
| A J Clacher | 01325 468372 | | 124 High Northgate, Darlington, DL1 1UR | | Map & Directions |
| R Elward | 01325 316985 | | 10 Millbank, Heighington Village, Newton Aycliffe, DL5 6RF | | Map & Directions |
| Bee Cozy Heating & Plumbing Services | 01325 266285 | | 32 Starmer Crescent, Darlington, DL1 4DQ | | Map & Directions |
| T P S Boiler Spares Ltd | 01325 240006 | | Unit 5, Edward Street Industrial Estate, Darlington, DL1 2UP | | Map & Directions |
| Kingsway Bathroom & Heating Centre | 01388 665252 | | 13 Fore Bondgate, Bishop Auckland, DL14 7PF | | Map & Directions |
| Paul Clarkson | 01609 772708 | | 56 Boroughbridge Road, Northallerton, DL7 8BN | | Map & Directions |
| N Robson | 01833 640868 | | 20 California Row, Middleton-In-Teesdale, Barnard Castle, DL12 0TA | | Map & Directions |
| Able Note Plumbing & Heating Engineers | 01388 834106 | | 58 Copeland Road, West Auckland, Bishop Auckland, DL14 9JL | | Map & Directions |
| Brinkburn Plumbing & Heating | 01325 250699 | | 23 Sandriggs, Darlington, DL3 0TP | | Map & Directions |
| Derbyshire Brian | 01388 817171 | | 1 Osborne Road, Spennymoor, DL16 7SL | | Map & Directions |
| P H Machin | 01969 624163 | | Windyridge, Leyburn Road, Middleham, Leyburn, DL8 4PL | | Map & Directions |
| Kevin Boland | 01325 316697 | | 14 Hamsterley Road, Newton Aycliffe, DL5 7QB | | Map & Directions |
| Mellett | 01325 313490 | | 7 Rushyford Court, Newton Aycliffe, DL5 4RF | | Map & Directions |
| Hurworth Plumbing & Heating Ltd | 01325 721547 | | 1 Manorfields, Hurworth, Darlington, DL2 2BG | | Map & Directions |
| Hot Fires & Heating Ltd | 01325 351351 | | 33 West Auckland Road, Darlington, DL3 9EL | | Map & Directions |
| J B Thomas Ltd | 01609 780256 | | The Living Fire Centre, 62-63 High Street, Northallerton, DL7 8EG | | Map & Directions |
| D J Clapham | 01325 720048 | | The Haven, Baxby Terrace, Hurworth Place, Darlington, DL2 2DN | | Map & Directions |
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