| A Rourke Roofing Ltd | Carnoustie | 2021 |
| A Rout Electrical Ltd | Harlow | 2020 |
| A Ruben Ltd | London | 2013 |
| A Ruddick & SON Limited | Kingston Upon Thames | 2001 |
| A RUS Electrical Ltd | Northampton | 2024 |
| A RUS PTF Limited | Wellingborough | 2015 |
| A Russet Developments Limited | St Osyth | 2025 |
| A Ryder Builders Ltd | Manchester | 2004 |
| A S & E Contracts Ltd | Swansea | 2014 |
| A S & H Builders Ltd | Scunthorpe | 2018 |
| A S a Construction Ltd | Runcorn | 2018 |
| A S ARB Ltd | Sedgley | 2018 |
| A S Ashmore Builders Ltd | Birmingham | 2026 |
| A S B Services Limited | Christchurch | 2000 |
| A S Baker Carpentry & Building Limited | Axbridge | 2017 |
| A S Blake Carpentry and Construction Ltd | Battle | 2019 |
| A S Brickwork (Oxford) Ltd | Oxford | 2018 |
| A S Brickwork Limited | Surrey | 2006 |
| A S Builders (Honiton) Limited | Honiton | 2016 |
| A S Builders (MCR) Ltd | Salford | 2019 |
| A S Building & Plumbing Limited | Burgess Hill | 2013 |
| A S Building & Property Maintenance Limited | Mansfield | 2026 |
| A S Building and Carpentry Ltd | Wolverhampton | 2023 |
| A S Building Contractors Ltd | Kingswinford | 2005 |
| A S Building Development Ltd | Wembley | 2015 |
| A S Building Management Ltd | Romford | 2015 |
| A S Building Midlands Ltd | Birmingham | 2022 |
| A S C Construction (Beds) Ltd | Bedford | 2013 |
| A S Carpentry & Building Ltd | Uttoxeter | 2023 |
| A S Civils Ltd | Manchester | 2025 |
| A S Cladding Ltd | Stoke-On-Trent | 2019 |
| A S Coded Welding Ltd | London | 2013 |
| A S Construction & Design Ltd | Bridgend | 2011 |
| A S Construction (Essex) Ltd | Great Yarmouth | 2015 |
| A S Construction (Glasgow) Ltd | Glasgow | 2021 |
| A S Construction (Scotland) Ltd | Glasgow | 2021 |
| A S Construction Services N/W Limited | Leigh | 2023 |
| A S Construction U.K Ltd | Loughton | 2010 |
| A S Cook Carpentry and Building Services Limited | Chatham | 2018 |
| A S Custom Builders Ltd | Wolverhampton | 2017 |
| A S D (Nottm) Limited | Mansfield | 2011 |
| A S D South Limited | Hampshire | 1997 |
| A S Decorating Contractors Ltd | Oldham | 2025 |
| A S Development Finance Limited | West Bromwich | 2024 |
| A S Dhillon Builders Ltd | Leicester | 2025 |
| A S E Building Contractors Limited | Keighley | 2019 |
| A S Electrical and Renewables Ltd | Worthing | 2024 |
| A S Electrical Contractors (NW) Limited | Wigan | 2020 |
| A S Electrical Engineers Limited | Bradwell, Braintree | 2012 |
| A S Electrical Services (Southern) Limited | Worthing | 2016 |
| A S Extra Services Ltd | London | 2026 |
| A S Force Construction Ltd | London | 2024 |
| A S G Mechanical Limited | Chigwell | 2021 |
| A S G Roofing Ltd | Epping | 2012 |
| A S Garage Doors Ltd | King'S Lynn | 2019 |
| A S GAS & Plumbing Limited | Slough | 2016 |
| A S GAS (Midlands) Limited | Wolverhampton | 2017 |
| A S Harrington Electrical & Property Services Ltd | Northampton | 2016 |
| A S Harrison Ltd | London | 2022 |
| A S Haven Heating Limited | Newhaven | 2019 |
| A S Heating & Plumbing Ltd | Sheffield | 2026 |
| A S Hobbs Ltd | Swanage | 2018 |
| A S Homes Herts Ltd | Hemel Hempstead | 2023 |
| A S Hope Plumbing and Heating Limited | Worthing | 2015 |
| A S Installations (Kitchens & Bedrooms) Limited | Wigan | 2019 |
| A S Interiors Design Limited | Burgess Hill | 2010 |
| A S J Facilities Building Management Limited | Smethwick | 2010 |
| A S J Installations Limited | Congleton | 2002 |
| A S J Security & Electrical Ltd | Stafford | 2014 |
| A S Jarrett Limited | Plymouth | 2003 |
| A S Joinery (Cumbria) Limited | Carlisle | 2022 |
| A S Jones Enterprises Ltd | Solihull | 2008 |
| A S K Contractors Ltd | Holywell | 2001 |
| A S K Properties Bristol Limited | Bristol | 2019 |
| A S K Property Construction Limited | West Midlands | 2006 |
| A S Luke Contracts Ltd | Bridgnorth | 2026 |
| A S M C Development Ltd | Southport | 2017 |
| A S M Installations Limited | Bromley | 2009 |
| A S Maclean Ltd | Lairg | 2026 |
| A S Mahoney Decorators Limited | Pontypool | 2008 |
| A S Major Engineering Ltd | Ellesmere Port | 2024 |
| A S Management & Building Consultancy Ltd | London | 2023 |
| A S Mandair Ltd | Gravesend | 2023 |
| A S Mechanical Services Limited | Stoke-On-Trent | 2016 |
| A S Metalcraft Ltd | Rotherham | 2011 |
| A S Nandha Ltd | Hayes | 2024 |
| A S Newton Tape and Jointing Specialists Limited | Portsmouth | 2018 |
| A S North Limited | Dartford | 1979 |
| A S P Electrical Limited | Derby | 1999 |
| A S P Murphy Brickwork Contractors Ltd | Aldermaston | 1997 |
| A S P Scaffolding Ltd | Longfield | 2024 |
| A S Pannu Ltd | Ruislip | 2025 |
| A S Parr Limited | Wrotham Heath | 2015 |
| A S Parratt Builders Ltd | Hants | 2002 |
| A S Pipelines Ltd | Richmond | 2024 |
| A S Plastering Services Ltd | Dagenham | 2016 |
| A S Plumbing & Heating Ltd | Burntwood | 2009 |
| A S Plumbing Heating Design Limited | Lytham St. Annes | 2019 |
| A S Plumbing Services Ltd | Woking | 2005 |
| A S R Electrical Ltd | Lytham St Annes | 2017 |