| A & D Davies Engineering Ltd | Ammanford | 2024 |
| A & D Embroidery Limited | Wolverhampton | 2007 |
| A & D Fabrications UK Limited | Worksop | 2006 |
| A & D Food Trading Limited | Aldridge | 2023 |
| A & D Gates Ltd | Stoke-On-Trent | 2015 |
| A & D Insulations Limited | Rochester | 1997 |
| A & D Joinery & Interiors Limited | West Midlands | 1999 |
| A & D Joinery Limited | Northampton | 1993 |
| A & D Precision Engineering North Yorkshire Limited | Scarborough | 2013 |
| A & D Printing UK Limited | Birmingham | 2018 |
| A & D Sports Limited | Rochdale | 2002 |
| A & D Technologies Ltd | Crewe | 2024 |
| A & E Healthcare Ltd | Dumfries | 2012 |
| A & E Hydraulics Ltd | Farnham | 2013 |
| A & E Mechanical Limited | Grimsby | 2011 |
| A & E Supplies Limited | Sale | 1987 |
| A & E Woodward (Hull) Ltd | Hull | 2017 |
| A & EM London Limited | London | 2014 |
| A & F Engineering Limited | Basingstoke | 1998 |
| A & F Gelati Italiani Limited | London | 2009 |
| A & G Bespoke Joinery Ltd | Borehamwood | 2024 |
| A & G Caravans Limited | Bridlington | 2008 |
| A & G Carpentry Limited | Portsmouth | 2018 |
| A & G Commercials (Lincoln) Limited | Lincoln | 2005 |
| A & G Escrow Tapes Limited | Swindon | 2021 |
| A & G King Timber Limited | Lockerbie | 1999 |
| A & G Machine Tool Repairs Limited | Huddersfield | 2003 |
| A & G Midlands Builders Ltd | Slough | 2025 |
| A & G Precision and Sons Limited | Preston | 1994 |
| A & G Screenprinters & Company Limited | Ashton Under Lyne | 1997 |
| A & G Signs Limited | Castleford | 2005 |
| A & G Trade Plastic and Glass Limited | Skipton | 2011 |
| A & G Windoors Ltd | Wolverhampton | 2020 |
| A & G Windows Limited | Middlesex | 2003 |
| A & H Engineering Ltd | Kirknewton | 2014 |
| A & H Europe Ltd | Horsham | 1978 |
| A & H Garments Ltd | Leicester | 2019 |
| A & H Gate Maintenance Ltd | Halesowen | 2024 |
| A & H Hargreaves (Rossendale) Limited | Rossendale | 2003 |
| A & H Interiors Limited | Bradford | 1988 |
| A & H Joinery Associates Ltd | Tring | 2022 |
| A & H Site Line Boring & Machining Ltd | Bishop Auckland | 2015 |
| A & H Structures Limited | Derby | 2014 |
| A & I Coatings (UK) Ltd | Reading | 2019 |
| A & I Knitwear Limited | Manchester | 2001 |
| A & I Site Services Limited | St. Helens | 2025 |
| A & J (N/East) Ltd | North Shields | 2002 |
| A & J Blinds Limited | Ellesmere Port | 2009 |
| A & J Dental Laboratory Ltd | Staines-Upon-Thames | 2011 |
| A & J Dental Prosthetics Ltd | Halesowen | 2017 |
| A & J Elliot Electrical Limited | Galashiels | 2009 |
| A & J Green Engineering Ltd | Cheltenham | 1960 |
| A & J Group Investments Ltd | Leicester | 2018 |
| A & J Hilston Limited | Falkirk | 1999 |
| A & J Innovations Ltd | Stourbridge | 2011 |
| A & J Lighting Solutions Limited | Braintree | 2008 |
| A & J Metal Polishing Limited | Leigh On Sea | 2003 |
| A & J Phillips (Electrical Contractors) Ltd | Sidcup | 1998 |
| A & J Properties (DK) Ltd | Swadlincote | 2026 |
| A & J Rollings Dental Studio Limited | Sutton Coldfield | 2015 |
| A & J Scientific Limited | Warrington | 2001 |
| A & J Sectional Buildings Limited | Wellingborough | 1984 |
| A & J Services (Lincs) Ltd | Spalding | 2020 |
| A & J Trading (London) Limited | London | 2008 |
| A & J Trimmers Limited | Bristol | 2003 |
| A & J Welding Supplies Limited | Birmingham | 1995 |
| A & K Bespoke Manufacturing Ltd | Blackburn | 2023 |
| A & K Ecofilm Limited | Bradford | 1998 |
| A & K Engineering Services Ltd | Manchester | 2002 |
| A & K Fabrications Limited | Turriff | 2025 |
| A & K Installations Limited | Llanelli | 2017 |
| A & K Maintenance Limited | Perthshire | 2003 |
| A & K Star Ship Ltd | Cambridge | 2026 |
| A & L Affinity Ltd | Burnley | 2019 |
| A & L Davis Services Limited | St. Neots | 2025 |
| A & L Harper Limited | Banff | 2026 |
| A & L Interiors Limited | Hockley | 2017 |
| A & L Precision Engineering Limited | Cardiff | 2013 |
| A & L Stronach Limited | Inverurie | 2006 |
| A & LC Redditch Limited | Redditch | 2009 |
| A & M Discount Furniture Ltd | Blackburn | 2023 |
| A & M Ductwork Limited | Willenhall | 2012 |
| A & M EDM Limited | Smethwick | 2002 |
| A & M Imaging Services Limited | Edinburgh | 2006 |
| A & M Industrial Controls Limited | Warwickshire | 2005 |
| A & M Kitchen Manufacturing Ltd | Fareham | 2010 |
| A & M Narrowboats Ltd | Nottingham | 2017 |
| A & M Nelson Limited | Appleby | 2002 |
| A & M Pallets Limited | Launceston | 2001 |
| A & M Polishers Ltd | London | 2017 |
| A & M Records Limited | London | 1969 |
| A & M Repairs Limited | Blandford | 2003 |
| A & M Robinson Limited | | 2000 |
| A & M Trailers Ltd | Armagh | 2008 |
| A & M Welding Services Limited | Uttoxeter | 2012 |
| A & M Windows & Doors Ltd | Magherafelt | 2006 |
| A & N Engineering (Bedfordshire) Ltd | Dunstable | 2010 |
| A & N Engineering Services Limited | Industrial Estate Kettering | 2002 |
| A & N Perkins Limited | Attleborough | 2004 |
| A & N Supplies Ltd | Darlington | 2025 |