| A McRoberts Plumbing & Heating Engineers - 66 Irvine Road - KA1 2JS |
| Andrew Hood Ltd - Chamberhouses Mill Rd - KA12 0JN |
| Claymore UK Ltd - Caledonia - KA16 9EU |
| CPL Distribution - Coal Yard - KA6 7AU |
| Crouch Mining Ltd - Dalleagles - KA18 4QW |
| Environmental & Gas Monitoring Ltd - Unit 4 - KA4 8HH |
| Gibson Wight Ltd - 14-18 East Shaw Street - KA1 4AN |
| H & V Commissioning Services - 16 Barrmill Road - KA4 8HH |
| Heating Quotes - 12 Old Avenue - KA18 2HX |
| Heatserv - 49 Titchfield Street - KA1 1QS |
| Homecare Gas Services - 29 Standalane - KA3 3AW |
| John R Smith & Son (Ayr) Ltd - 6 Cathcart Street - KA7 1BJ |
| Knight Energy Services Ltd - Clydeport Terminal - KA29 0AZ |
| O'Neil Gas Services Ltd - 44a Green St Lane - KA8 8BH |
| Robertson Gas Services Ltd - 14 Barra Pl - KA20 3BF |
| Solar & Wind Applications Ltd - Hannah research institute - KA6 5HL |
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