| A M King Services Ltd | St. Neots | 2019 |
| A M Kirk Ltd | Dorchester | 2012 |
| A M Kitchens & Carpentry Limited | Northampton | 2014 |
| A M Landscaping & Driveway Specialists Limited | Leeds | 2017 |
| A M LEE Electrical Ltd | London | 2026 |
| A M Luxury Homes (UK) Limited | Bradford | 2015 |
| A M Mills Limited | Blackboys | 2013 |
| A M Multi-Utilities Limited | Barnsley | 2006 |
| A M Nottingham Limited | Hoveringham | 2010 |
| A M O Electrical Ltd | Sheerness | 2016 |
| A M Osman Builders Limited | East Yorkshire | 2006 |
| A M Ostler Electrical Limited | Torquay | 2006 |
| A M P Circuit Limited | London | 2026 |
| A M P Construction Limited | Barnsley | 1995 |
| A M Pavier Plumbing and Heating Limited | Whitchurch | 2011 |
| A M Phillips Home Improvement Services Ltd | Denby | 2016 |
| A M Plumbing & Drainage Limited | Derby | 2026 |
| A M Plumbing & Heating Ltd | London | 2017 |
| A M Plumbing Limited | Dumfries | 2004 |
| A M Powell Contractors Ltd | Cowes | 1996 |
| A M Project Services Operation Limited | Bristol | 2012 |
| A M Property Refurb Services Ltd | Uxbridge | 2026 |
| A M Property Sevices Ltd | Southampton | 2014 |
| A M Roofing & Cladding Ltd | Gloucester | 2025 |
| A M Roofing & Guttering Services Ltd | Hertford | 2016 |
| A M Roofing & Services Ltd | Berkhamsted | 2021 |
| A M Roofing ( Essex) Limited | Hornchurch | 2020 |
| A M Roofing Specialists Ltd | Colchester | 2020 |
| A M S Electrical (North East) Limited | Whitley Bay | 2008 |
| A M S Plumbing & Heating Ltd | Middlesex | 2005 |
| A M Safe Flow Services Ltd | London | 2025 |
| A M Shipman & Sons Ltd | Leyburn | 2014 |
| A M Steel Buildings Ltd | Northallerton | 2023 |
| A M Steer Limited | E Sussex | 2003 |
| A M Systems (Engineering) Limited | Whitchurch | 1997 |
| A M Taylor Property Group Limited | Ipswich | 2019 |
| A M Tiling (South East) Limited | Rainham | 2015 |
| A M Vamplew & SON Ltd | Lincoln | 2022 |
| A M W Ceramics & Natural Stone Tiling Limited | Stafford | 2008 |
| A M W Plastering & Rendering Ltd | Bromley | 2012 |
| A M W Stairlifts Ltd | Manchester | 2014 |
| A M Water Services Limited | Northampton | 2016 |
| A M Welch and SON Building and Roofing Limited | Ormskirk | 2002 |
| A M Willett Property Renovations Limited | Swansea | 2020 |
| A M Williams Plumbing and Heating Limited | St Asaph | 2017 |
| A M Wilson Associates Limited | Hoddesdon | 2007 |
| A M Winspear Interiors Limited | Birmingham | 2015 |
| A M-Gears Ltd | Hemel Hempstead | 2016 |
| A MAC Electrics Ltd | Cookstown | 2021 |
| A Macdougall Contracting Limited | Stornoway | 2023 |
| A Mackenzie Ltd | Halifax | 2024 |
| A Macleod Building Limited | Aberdeen | 2011 |
| A Macleod Construction Limited | Inverurie | 2014 |
| A Macleod Project Management Ltd | Glasgow | 2026 |
| A Macneil Painting & Taping Contractors Ltd | Inverness | 2016 |
| A Mae's Brickwork Limited | Kidderminster | 2025 |
| A Magill Brickwork and Construction Ltd | Liverpool | 2021 |
| A Maintenance Company Ltd | Cardiff | 2017 |
| A Mako Ltd | London | 2008 |
| A Malick (AM) Consultants Ltd | Billingham | 2013 |
| A Mallyon Construction Limited | Newmarket | 2023 |
| A MAN WHO CAN (Bath) Limited | Bath | 2014 |
| A MAN With a Plan Limited | Bristol | 2011 |
| A Margarita Limited | London | 2025 |
| A Marks Construction Ltd | Ruislip | 2016 |
| A Marks Electrical Limited | Northampton | 2021 |
| A Marples Landscapes Limited | Chesterfield | 2017 |
| A Marsh Brickwork Limited | Boston | 2024 |
| A Martens Kitchens & Bathrooms Ltd | Barnet | 2014 |
| A Martini Ltd | London | 2021 |
| A Mason Limited | Rotherham | 2013 |
| A Mason TM Ltd | Kidderminster | 2021 |
| A MC a Builders Limited | Craigavon | 2006 |
| A Mcbride Joinery Ltd | Glasgow | 2016 |
| A Mccauley Limited | Newtownards | 2014 |
| A Mcdonald Brickwork Limited | Sudbury | 2010 |
| A Mcdonnell Building Limited | Chester | 2019 |
| A Mcewen Smith Agricultural and Commercial Contracting Limited | Taunton | 2023 |
| A Mcgann Building Contractors Limited | North Shields | 2003 |
| A Mcghee Engineering Solutions Ltd | Wishaw | 2018 |
| A Mcghee Property Care Ltd | Belfast | 2019 |
| A Mcginn Groundworks & Equestrian Construction Ltd | Holme Next The Sea | 2016 |
| A Mcintyre Roofing Limited | Sheffield | 2012 |
| A Mckie Builders Limited | Ayr | 2019 |
| A Mcqueen Engineering Ltd | St. Andrews | 2013 |
| A Mcquillan Maintenance Limited | Greenhithe | 2016 |
| A Mehew Building Services Limited | Nottingham | 2006 |
| A Mellor Plumbing & Heating Services Limited | Rochdale | 2012 |
| A Meta Limited | Stevenage | 2026 |
| A Metcalf Limited | Skipton | 2001 |
| A Miari Construction Limited | London | 2022 |
| A Middleton Carpentry Limited | Lowestoft | 2016 |
| A Milburn Limited | Scarborough | 2021 |
| A Miles Ltd | Leeds | 2019 |
| A Million MAN Construction Ltd | London | 2026 |
| A Milne Building Construction Ltd | Seaford | 2016 |
| A Mini Crane Hire Company Limited | Liverpool | 2008 |
| A Mitch Build Ltd | Worthing | 2020 |
| A Mitchell Construction Ltd | Liskeard | 2025 |
| A Mitchell Electrical Ltd | Wellingborough | 2006 |