| 29311 | United Kingdom | JW Jones & Son | 3-5 Bay View Road, Colwyn Bay, LL29 8DW | +44 1492 531414 | www.jwjones-son.co.uk | Mitsubishi Electric Corporation | |
| 29312 | United Kingdom | JWK Electrical Ltd | Unit A, Lexden Lodge Business Park, Crowborough Hill, Crowborough, East Sussex TN6 2NQ | +44 1892 662756 | jwke.co.uk | | |
| 29313 | United Kingdom | K Cahill Electrical Limited | | +44 78540 28840 | https://www.kcahillelectrical.co.uk | | |
| 29314 | United Kingdom | K Glackin Electrics | 99 Mullaghboy Road, Magherafelt, BT45 8JH | +44 28 79386656 | kglackinelectrics.co.uk | | |
| 29315 | United Kingdom | K Jones Electrical | Unit 22, Quarry Farm, Bodiam, Robertsbridge, East Sussex, TN32 5RA | +44 1580 848118 | www.kjoneselectrical.co.uk | | |
| 29316 | United Kingdom | K Sparks Electrical Services Ltd | Unit 4, Rawmec Business Park, Plumpton Road, Hoddesdon, Herts, EN11 0EE | +44 843 6365669 | ksparkselectrical.co.uk/ | | |
| 29317 | United Kingdom | K-Tech Electrical | 5 Le Marchant Close, EX14 4XD | +44 7877 086931 | www.k-tech-electrical.co.uk | | |
| 29318 | United Kingdom | K2 Renewables | UNIT 3 Milton Road, Stretford Manchester, M32 0TQ | +44 333 6663363 | www.k2renewables.net | | |
| 29319 | United Kingdom | KAA Electrical Contractors Limited | 11 Minter Avenue, Densole, Kent, CT18 7DS | +44 800 5345014 | www.kaaelectrical.co.uk | | |
| 29320 | United Kingdom | Kaberry Building Ltd. | Woodrow Business Centre, 4 Woodrow Way, Irlam, Manchester M44 6NN | +44 844 3585533 | www.kaberry.co.uk | | |
| 29321 | United Kingdom | Kalister Technologies | 100 West One City, Sheffield | +44 79300 05970 | kalistergroup.com | | |
| 29322 | United Kingdom | Kane Group Building Services Ltd | Unit 18-19, Scarva Road Industrial Estate, Scarva Road, Banbridge, Co. Down, BT32 3QD | +44 28 43778484 | https://kanegroup.co.uk | | |
| 29323 | United Kingdom | K A Watts Plumbing & Heating Limited | Unit 9, M3 Trade Park, Manor Way, Eastleigh, Hampshire, SO50 9YA | +44 23 80684833 | www.kawatts.co.uk | | |
| 29324 | United Kingdom | KB (Kenneth Brownlee) Electrical NI Ltd | 69 Swanlinbar Rd, Enniskillen BT92 2DE | +44 28 66336631 | www.kbelectrical.co.uk | Ginlong Technologies Co., Ltd | |
| 29325 | United Kingdom | KBL Electrical & Mechanical Services | 40 Ogle Street, Hucknall, Nottingham, NG15 7FR | +44 1159 632088 | https://kenburrowsltd.com | | |
| 29326 | United Kingdom | Keepmoat Limited | The Waterfront, Lakeside Boulevard, Doncaster, DN4 5PL | +44 01302 896800 | www.keepmoat.com | | |
| 29327 | United Kingdom | Kellwood Group | Unit 7, Catherinefield Ind. Est., Dumfries, DG1 3PQ | +44 1387 255816 | www.kellwood.co.uk | | |
| 29328 | United Kingdom | Kempson Electrical Services Limited | Unit 8, Bessemer Crescent, Rabans Lane Industrial Area, Aylesbury, Buckinghamshire, HP19 8TF | +44 1296 330961 | www.kempsonelectrical.co.uk | | |
| 29329 | United Kingdom | Kennet Electrical Contractors | Wonersh, Briff Lane, Upper Bucklebury, Berkshire, RG7 6ST | +44 1635 872444 | www.kennetelectrical.co.uk | | |
| 29330 | United Kingdom | Kenneth Ferguson Electrical Contractors | Morar House, Main Street Connel, PA37 1PA | +44 1631 710862 | www.fergusonelectrical.co.uk | | |
| 29331 | United Kingdom | Kernow Controls Ltd. | Unit 2, Parkengue Kernick Industrial Estate, Penryn, Cornwall, TR10 9EP | +44 1326 712093 | www.kernowcontrols.co.uk | | |
| 29332 | United Kingdom | Kernow Mobile Caravan Services | | +44 7877 352288 | www.kernowmobilecaravanservices.co.uk | | |
| 29333 | United Kingdom | Kershaw Insulation | Edward Leonard House, Pembroke Avenue, Denny End Road, Waterbeach, Cambridge, CB25 9QR | +44 1223 715800 | www.kershawinsulation.co.uk | | |
| 29334 | United Kingdom | Kershaw Roofing Limited | Unit 2 Moorside Place, Moorside Road, Winchester SO32 7FX | +44 2380 617001 | https://kershawroofing.co.uk | | |
| 29335 | United Kingdom | KES Group | Strabane Business Park, Melmount Road, BT82 9GUPH | +44 28 82831022 | https://kesgroup.com | | |
| 29336 | United Kingdom | Keswick Superglaze Limited | Superglaze House, Penrith Road, Keswick, Cumbria, CA12 4JP | +44 1768 774268 | keswicksuperglaze.co.uk | | |
| 29337 | United Kingdom | Kevin Winchester Electrical Ltd. | 45a Collington Avenue, Bexhill-on-Sea, East Sussex, TN39 3NB | +44 1424 215044 | www.kevinwinchesteragarepairs.co.uk | | |
| 29338 | United Kingdom | Kew Solar Ltd. | Unit G03, Courtenay House, 10 Courtenay Road, East Lane Business Park, Wembley, Middlesex HA9 7ND | +44 20 86211411 | www.kewsolar.co.uk | Canadian Solar Inc., Panasonic Corporation (Sanyo), LG Electronics, Inc. | SMA Solar Technology AG, Steca Elektronik GmbH, Mastervolt International BV, Enphase Energy, Inc., SolarEdge Technologies, Ltd. |
| 29339 | United Kingdom | KF Electrics Ltd. | 30 Eavesdale, Tanhouse, Skelmersdale, Lancashire, Wn8 6au | +44 7895 619471 | www.kfelectrics.net | | |
| 29340 | United Kingdom | KH Electrical | 61 Leeway Road, Southwell, Nottinghamshire NG25 0BZ | +44 1636 816144 | www.electriciansouthwell.co.uk | | |