| Abcon Readimix Concrete Limited | West Yorkshire | 2000 |
| ABD Design & Consulting Limited | Leeds | 2006 |
| ABD Engineering Limited | United Kingdom | 2019 |
| ABD Services (England) Ltd | Hertfordshire | 2013 |
| ABD Steel Fabrication Ltd | London | 2025 |
| Abdab Interiors Ltd | Birchington | 2026 |
| Abdali Stars Limited | Birmingham | 2025 |
| Abdel Fabrics Limited | London | 2017 |
| Abdex Hose & Couplings Limited | Luton | 1982 |
| Abdn.Com Ltd | Aberdeen | 2022 |
| Abdul Basit Enterprises Ltd | Ilford | 2025 |
| Abdul Home Made Organic Tea Ltd | London | 2026 |
| Abdul Majid Trade International Ltd | England | 2025 |
| Abdull Builders Ltd | Birmingham | 2025 |
| Abdullah Enterprize Limited | Birmingham | 2022 |
| Abdullah Rakan Ltd | London | 2025 |
| Abdullah Saif Trading Ltd | London | 2025 |
| Abdulnaser and Abdulkareem Ltd | Manchester | 2025 |
| ABE Engineering Limited | Rotherham | 2021 |
| ABE Welding Services Limited | Chelmsford | 2015 |
| Abec (ME) Ltd | Tewkesbury | 2021 |
| Abec Ltd | Tewkesbury | 2007 |
| Abed Holding Ltd | London | 2023 |
| Abel and the Label Ltd | Bromsgrove | 2026 |
| Abel Applications Limited | Devon | 1996 |
| Abel Engineering Services Limited | London | 2014 |
| Abel Fabrication Services Ltd | Aberdeen | 2026 |
| Abel Health Solutions Ltd | Plymouth | 2022 |
| Abel Magnets Limited | Sheffield | 1998 |
| Abel Power and Control Solutions Limited | Doncaster | 2007 |
| Abel Systems Limited | Chesterfield | 1985 |
| Abelgenix Ltd | London | 2023 |
| Abelglass Trade Supplies Ltd | Chorley | 2009 |
| Abels Engineering Limited | Stoke-On-Trent | 2025 |
| Abelsimo Ltd | Ruislip | 2019 |
| Abeltronics Limited | Dereham | 2012 |
| Abelwood Limited | Witney | 2019 |
| Aben Europe Limited | Harrow | 2014 |
| Abena Botanicals Ltd | London | 2026 |
| Abena UK Limited | Coventry | 1999 |
| Abencraft Limited | Watford | 2019 |
| Abendana Enterprises Limited | Witham | 1981 |
| Abendana’S Ltd | Crawley | 2024 |
| Abened Ventures Ltd | London | 2019 |
| Aber Car Care Solutions Ltd | Aberdeen | 2024 |
| Aber Electronics Limited | Colchester | 2010 |
| Aber Falls Distillery Limited | Llanfairfechan | 2017 |
| Aber Group Limited | Aberystwyth | 2023 |
| Aber Instruments Limited | Aberystwyth | 1988 |
| Aber Original Pine Limited | Llanfairfechan | 2002 |
| Aber Photonics Limited | Lampeter | 2020 |
| Aber Wrought Iron Limited | Bargoed | 2005 |
| Aberbrothock Engineering Ltd | Arbroath | 2019 |
| Abercorn Corporation Limited | London | 1997 |
| Abercorn Heating Limited | Paisley | 2007 |
| Abercraft Ltd | Bucksburn | 2022 |
| Aberdare Furniture Company Limited | Cardiff | 1979 |
| Aberdeen Blind Company Limited | Stirling | 1991 |
| Aberdeen Boiler Services Limited | Aberdeen | 2003 |
| Aberdeen Cooling Company Ltd | Westhill | 2019 |
| Aberdeen Day Project Limited | Aberdeen | 2000 |
| Aberdeen Distillers Limited | Glasgow | 1993 |
| Aberdeen Distillery Ltd | Aberdeen | 2019 |
| Aberdeen Joinery Service Ltd | Aberdeen | 2019 |
| Aberdeen Journals Limited | Dundee | 1928 |
| Aberdeen Lifting Services Limited | Aberdeen | 2004 |
| Aberdeen Radiators Limited | Aberdeen | 2015 |
| Aberdeen Scottish Laboratories Limited | Aberdeen | 2022 |
| Aberdeen Sewing Machines Ltd | Aberdeen | 2015 |
| Aberdeen Sheet Metal Limited | Aberdeen | 2013 |
| Aberdeen Tarpaulin Specialist Ltd | Aberdeen | 2026 |
| Aberdeen Trailers Limited | Turriff | 2005 |
| Aberdeen Web Limited | Aberdeen | 1992 |
| Aberdeenshire Mechanical Services Ltd | Banchory | 2023 |
| Aberdein Innovations Ltd | Glasgow | 2026 |
| Aberderry Limited | Londonderry | 2019 |
| Aberdonia International Ltd | Kenilworth | 2024 |
| Aberdot Limited | Oldmeldrum | 2016 |
| Aberdream Bakes Ltd | Aberdeen | 2025 |
| Aberdyfi Ice Cream Limited | Aberdovey | 2009 |
| Abergavenny Boxes Ltd | Abergavenny | 2019 |
| Abergavenny Fine Foods Limited | Abergavenny | 1987 |
| Abergavenny Food and Wines Ltd | Abergavenny | 2022 |
| Abergavenny Holdings Limited | Pontypool | 2020 |
| Abergele Handyman Services Ltd | St. Asaph | 2018 |
| Abergwili Concrete Products Limited | Carms | 1974 |
| Aberikebab Ltd | Liverpool | 2024 |
| Aberlink Limited | Stroud | 2011 |
| Aberlour Engineering Ltd | Aberlour | 2010 |
| Aberlour Trading Ltd | Maidenhead | 2022 |
| Aberneath Industries Limited | Cardiff | 1988 |
| Abernethy Butter Limited | Lurgan | 2024 |
| Abernyte Brewery Limited | Perth | 2015 |
| Abersoch Boat Works Limited | Pwllheli | 2023 |
| Abersoch Brewing Company Ltd | Pwllheli | 2022 |
| Abersoch Coffee Company Limited | Pwllheli | 2024 |
| Abersoch Marine and Charter Limited | Pwllheli | 2018 |
| Abersoch Spirit Company Ltd | London | 2019 |
| Aberton Ltd | Burton-On-Trent | 2021 |
| Aberwood Bespoke Ltd | Haverfordwest | 2021 |