| 29611 | United Kingdom | MIC Group Limited | Devirgo House, Garretts Green Trading Estate, Valepits Road, Birmingham, B33 0TD | +44 800 1804563 | https://www.mic-group.co.uk | | |
| 29612 | United Kingdom | Micro Renewable Solutions | Hamilton Road, Reading. RG1 5RB | +44 118 9268013 | www.microrenewable.co.uk | | |
| 29613 | United Kingdom | Midas Group | Midas House, Winterstoke Road, Bristol, BS3 2LF | +44 117 3052100 | www.midasgroup.co.uk | | |
| 29614 | United Kingdom | Midland Mains Electrical | | +44 1543 279498 | www.midlandmains.co.uk | | |
| 29615 | United Kingdom | Midland Solar Ltd | 6 Lobbs Wood Close, Leicester, LE5 1DH | +44 79 44741891 | midlandsolarltd.co.uk | | |
| 29616 | United Kingdom | Midlands Electrical Fire & Security Ltd. | Unit 2a, Chemical Lane, Longbridge Hayes, Longport, Stoke-on-Trent, Staffordshire, ST6 4PU | +44 1782 266010 | midlandsefs.co.uk | | |
| 29617 | United Kingdom | Midsomer Solartech Ltd | Unit 5A New Rock Ind Estate, Chilcompton, Radstock, BA3 4JE | +44 1761 233101 | www.solarpanelsinsomerset.co.uk | | |
| 29618 | United Kingdom | MIG Renewable Technologies | Marsh Gate House, Alphin Brook Road, Exeter, Devon, EX2 8TH | +44 1392 426947 | migrenewables.com | Canadian Solar Inc. | SMA Solar Technology AG |
| 29619 | United Kingdom | Mike Roberts Electrical | Vanguard Way, Shrewsbury, Shropshire, SY1 3TG | +44 1743 461471 | https://niceic-approved.company | | |
| 29620 | United Kingdom | Milners Electrical | 60, Brook Street, High Wycombe, Buckinghamshire, HP11 2EQ | +44 1494 523188 | https://www.milners-electrical.co.uk | | |
| 29621 | United Kingdom | Minel Energy | 3rd Floor, Cathedral Buildings, Dean Street, Newcastle Upon Tyne NE1 1PG | +44 1912 330567 | www.minel-energy.com | | |
| 29622 | United Kingdom | Minster Energy Solutions | 4 Chessingham Park, Common Road, Dunnington, York, YO19 5SE | +44 1904 486048 | www.minster-plumbing.co.uk | | |
| 29623 | United Kingdom | Mitie Group PLC | The Shard, Level 12, 32 London Bridge Street, Southwark, London, SE1 9SG | +44 330 6780710 | www.mitie.com | | |
| 29624 | United Kingdom | MJ Abbott Limited | Bratch Lane, Dinton, Salisbury, Wiltshire SP3 5EB | +44 1722 716361 | https://www.mjabbott.co.uk | | |
| 29625 | United Kingdom | MJ Electrical and Renewables Ltd. | 2 Maesbury Road, Keynsham, Bristol, BS31 1JR | +44 7967 447309 | mjelecandrenew.co.uk | | |
| 29626 | United Kingdom | MJB Electrical & Solar Services | 22 Summerland Lane, Newton, Swansea, SA3 4UJ | +44 1792 293184 | www.mjbelectricalservices.com | | |
| 29627 | United Kingdom | MK Electrics Ltd | Lintonville Parkway, Ashington, NE63 9JZ | +44 1670 528429 | www.mkelectricsltd.co.uk | | |
| 29628 | United Kingdom | MK Power Ltd. | PO Box 7564, Milton Keynes, MK11 9GA | +44 1908 227902 | www.mkpower.co.uk | | |
| 29629 | United Kingdom | MM Electrical Services (Hereford) Ltd. | The Farm Cottage, Hanbury Green Shobdon, Leominster, Herefordshire, HR6 9LX | +44 1432 760616 | mmelectrical-services.co.uk | | |
| 29630 | United Kingdom | MM Energy | North Southannan Farm, Fairlie, Ayrshire, KA29 0EA | | mmenergy.co.uk/ | | |
| 29631 | United Kingdom | MMAXX Renewables | 1, Lenziemill Road, Cumbernauld, Glasgow, G67 2RL | +44 870 2427772 | www.mmaxx.com | | |
| 29632 | United Kingdom | MMS Building Services Ltd. | 5 Maryfield Cres, Leslie, Glenrothes, KY6 3JY | +44 1592 741423 | www.mmsbuildingservices.co.uk | Enphase Energy, Inc. | |
| 29633 | United Kingdom | Modern Energy & Electrical Services | New Road, Newton, Porthcawl | | www.modernenergyelectricalservices.com | | |
| 29634 | United Kingdom | Modern Energy Solutions | 79 Longford Lane, Longlevens, Gloucester, GL2 9HB | +44 1452 385888 | www.modernenergysolutions.co.uk | Kyocera Corporation, Sharp Energy Solutions Europe, Panasonic Corporation (Sanyo) | SMA Solar Technology AG, Fronius International GmbH, Mastervolt International BV |
| 29635 | United Kingdom | Moixa Energy Holdings Ltd. | 29-31 Saffron Hill, London EC1N 8SW | +44 207 7341511 | www.moixa.com | | |
| 29636 | United Kingdom | Mole Energy | Unit 5, Coombe Park, Ashprington, Totnes, TQ9 7DY | +44 1803 732946 | www.moleenergy.com | Fronius International GmbH, SolarEdge Technologies, Ltd. | |
| 29637 | United Kingdom | Mon Maintenance Services Ltd. | Unit 14a, Block B, Penrhos Business Park, Holyhead LL65 2FD | +44 1407 764211 | https://www.monmaintenanceservices.co.uk | | |
| 29638 | United Kingdom | Moolands Ltd | Units 6 Bowes Industrial Centre, Wrotham Road, Meopham, Kent DA13 0QB | +44 1474 816300 | https://www.moolands.com | | |
| 29639 | United Kingdom | Morgans Solar | 37 Ashburnham Road, Ampthill, MK45 2RH | +44 1525 213103 | morganssolar.com | | |
| 29640 | United Kingdom | Morris & Aubrey Electrical Contractors Ltd | 9 Parkwalk, Ross-on-Wyem, Herefordshire, HR9 5LW | +44 1989 568928 | www.morrisandaubreyltd.co.uk | | |