| Abiding Assets Ltd | Pembroke | 2021 |
| Abigayle Holdings Limited | London | 2021 |
| Abii 2 Limited | Altrincham | 2019 |
| Abilis Investments Ltd | London | 2016 |
| Ability Care Limited | Abingdon | 2010 |
| Ability Matters (NI) Limited | Belfast | 2004 |
| Ability Matters Ltd | Abingdon | 2004 |
| Ability Products Limited | Abingdon | 2010 |
| Abing Homecare Limited | Norwich | 2021 |
| Abingdon Court Care Limited | London | 2005 |
| Abingdon Designs Limited | Oxford | 1992 |
| Abingdon Marine Ltd | London | 2024 |
| Abinger Homes Limited | Hailsham | 2019 |
| Abinger Investments Limited | Reading | 2016 |
| Abinger Properties Limited | Alresford | 2023 |
| Abiodun Adeyemi Adenuga Ltd | London | 2026 |
| Abivale Veterinary Group Limited | Bristol | 2003 |
| Abizainab Limited | London | 2019 |
| ABJ Partners Limited | London | 2023 |
| ABL Independent Financial Advisers Limited | London | 1998 |
| ABL789 Holdings Limited | Bolton | 2018 |
| Ablative Hosting Limited | Berkeley | 2017 |
| Able & Mettle Limited | Sheffield | 2003 |
| Able 2 Plumbing Limited | Maidenhead | 2011 |
| Able BOB Services Limited | Bournemouth | 2018 |
| Able Couriers Limited | Sheffield | 2005 |
| Able Decommissioning Services Limited | Estate Haverton Hill Road | 2004 |
| Able Docks Limited | Billingham | 2011 |
| Able Electrical Contracts Limited | Hemel Hempstead | 2005 |
| Able Gutter Systems Limited | Oswestry | 1985 |
| Able Humber Port Services Limited | Billingham | 2011 |
| Able Ports Limited | Billingham | 2011 |
| Able Power PTE Ltd | Stafford | 2016 |
| Able Ship Recycling Limited | Haverton Hill Road | 2003 |
| Able Touch Joinery Limited | Blaenau Gwent | 2005 |
| Able UK Ports Limited | Billingham | 2011 |
| Able Ventures Limited | London | 2011 |
| Able Waste Management Limited | Swindon | 2001 |
| Able Wellness Talking Therapies Limited | Cowbridge | 2023 |
| Ablechart Limited | London | 1986 |
| Ableflare Trading Limited | London | 1999 |
| Ablegold Limited | | 1998 |
| Ablehart Limited | Bridgend | 2026 |
| Ableline Limited | Enfield | 2012 |
| Ablelink Limited | | 2000 |
| Ablemade Limited | Cardiff | 1994 |
| Ablemail Electronics Limited | Salford | 2000 |
| Ableplan Limited | Bridgend | 2026 |
| Ably Ltd | Morden | 2013 |
| ABM Analytics Ltd | London | 2011 |
| ABM Avon Limited | Sevenoaks | 2008 |
| ABM Catering Solutions Limited | Warwick | 2015 |
| ABM Colne Limited | Sevenoaks | 2009 |
| ABM Europe Ltd. | London | 2007 |
| ABM Menuiserie Invest Ltd | Dover | 2016 |
| ABM Widnes Limited | Widnes | 2010 |
| Abmol Ltd | London | 2020 |
| Abmv Limited | Tonbridge | 2012 |
| ABN Capital Ltd | Epsom | 2020 |
| Abner-Electric Limited | Beckenham | 2016 |
| Abney Investments Ltd | Leicester | 2023 |
| Abode FSS Limited | Manchester | 2020 |
| Abos Associates Limited | Northwood Hills | 2013 |
| Abotsi EY Deliveries Ltd | Norwich | 2020 |
| Aboudi Limited | Stockport | 2023 |
| About Dance Ltd | Halesowen | 2014 |
| About Electrical Limited | Waltham Cross | 2019 |
| About ME Care and Support Limited | Peterborough | 2012 |
| About Mechanical Limited | Waltham Cross | 2019 |
| About Mind Ltd | London | 2020 |
| Aboutime Ltd | Birmingham | 2020 |
| Above & Below Powys & Shropshire Borders Pest Control Ltd | Welshpool | 2020 |
| Above and Beyond Drone Solutions Limited | Milton Keynes | 2023 |
| Above and Beyond Scaffolding Limited | Norwich | 2010 |
| Aboverocks Ltd | Lostwithiel | 2023 |
| ABP (Aldwych) Limited | London | 1986 |
| ABP (NO.1) Limited | London | 1983 |
| ABP (Pension Trustees) Limited | London | 1968 |
| ABP Connect Limited | London | 1985 |
| ABP Marchwood Limited | London | 2014 |
| ABP Nominees Limited | London | 1990 |
| ABP Quest Trustees Limited | London | 1996 |
| ABP Safeguard Limited | London | 2014 |
| ABP Secretariat Services Limited | London | 2012 |
| ABP Southampton Properties Limited | London | 1985 |
| ABQ Advisory Ltd | Tetbury | 2025 |
| Abracademy Limited | London | 2015 |
| Abracazee Productions Limited | Stockport | 2002 |
| Abracon UK Holding, Ltd. | Crawley | 2021 |
| Abraham Delroy Phillips Ltd | Kettering | 2022 |
| Abraham Isaac Jacob Limited | London | 2005 |
| Abrahame & Co Limited | Birmingham | 2014 |
| Abrahams Builders Limited | Bristol | 1966 |
| Abrams Ashton Holdings Limited | Walsall | 2017 |
| Abrams Ashton Williams Limited | St. Helens | 2007 |
| Abrari Limited | London | 2023 |
| Abraxas Financial Consultants Limited | Princes Risborough | 1986 |
| Abroma Co., Ltd. | Beckenham | 2015 |
| ABS Airconditioning Limited | Borehamwood | 2008 |
| ABS Analytics Limited | Lancaster | 2017 |