| Abington Estate Planning Services Ltd. | Northampton | 2003 |
| Abingworth Avillion Blocker Limited | London | 2012 |
| Abingworth Bioventures GP Limited | London | 2012 |
| Abingworth Bioventures III GP Limited | Midlothian | 2000 |
| Abingworth Bioventures IV GP Limited | Edinburgh | 2003 |
| Abingworth Bioventures V GP Limited | Edinburgh | 2006 |
| Abingworth CCD GP Limited | London | 2015 |
| Abingworth Management Holdings Limited | London | 1989 |
| Abingworth Management Limited | London | 1981 |
| Abingworth Second Partner Limited | London | 2012 |
| Abion Holding Limited | London | 2024 |
| Abirdcontracts Ltd | Liverpool | 2018 |
| Abiry Management Ltd | London | 2022 |
| Abishoy Alpha Ventures Ltd | Grays | 2025 |
| Abival Limited | Blackburn | 2016 |
| ABJ Holdings Limited | Darwen | 2019 |
| ABJ Limited | Norwich | 2023 |
| ABK Capital Holdings Limited | Exeter | 2025 |
| ABK Capital Partners Limited | Leicester | 2024 |
| ABK Enterprises Ltd | London | 2016 |
| ABK Holdings Limited | Lichfield | 2017 |
| ABK Mortgages Ltd | Birchington | 2024 |
| ABK Partners Ltd | London | 2026 |
| ABK UK Holdings Limited | Wilmslow | 2024 |
| ABK1 | Leeds | 2017 |
| Abka Limited | Highworth | 2014 |
| Abkb Investments Limited | Wolverhampton | 2024 |
| Abkm Holdings Limited | Bedford | 2020 |
| Abkr Holdings (Carlisle) Limited | Carlisle | 2021 |
| ABL 1 Touch Group Limited | Reigate | 2020 |
| ABL 1TOUCH Midco Limited | Reigate | 2020 |
| ABL Adjusting Limited | London | 1977 |
| ABL Capital Investments Ltd | Whiteley | 2017 |
| ABL Capital Ltd | Otley | 2012 |
| ABL Circuits (Holdings) Limited | Kempston | 2017 |
| ABL Corporate Limited | Pinner | 2025 |
| ABL Partners Ltd | Hitchin | 2020 |
| ABL Recovery Holdings Limited | Henley-On-Thames | 2020 |
| ABL Technical Services Holdings Limited | London | 2001 |
| ABL Ventures Ltd | Eastleigh | 2026 |
| ABL14 Limited | Swansea | 2014 |
| Ablaze Limited | Northampton | 2016 |
| Able 7 Limited | London | 2021 |
| Able 79 Properties Limited | Swadlincote | 2023 |
| Able Bridging Ltd | Glasgow | 2024 |
| Able Finance & Loans Limited | Grantham | 2006 |
| Able Health Care Group Limited | Northwood Hills | 2019 |
| Able Holdings (NE) Limited | Gateshead | 2025 |
| Able Holdings Limited | Margate | 2024 |
| Able HR Investco 1 Limited | Norwich | 2026 |
| Able HR Investco 2 Limited | Norwich | 2026 |
| Able Insurance Services Limited | Cardiff | 1994 |
| Able Money Ltd | Ickenham | 2010 |
| Able Mortgages Limited | Northampton | 2019 |
| Able Partners Ltd | Barnet | 2025 |
| Able PDM Holdings Limited | Ashford | 2018 |
| Able Property Services Limited | Bletchingley | 2014 |
| Able Systems EOT Trustee Limited | Manchester | 2021 |
| Able Wealth Management Ltd | Hornchurch | 2011 |
| Ableforce Services Limited | London | 2013 |
| Ablegrip Investments Limited | Watford | 2012 |
| Ableprize Limited | Brentwood | 2004 |
| Ablestoke Financial Advisers Limited | Chatham | 2011 |
| Ablestoke Group Limited | Chatham | 2019 |
| Ablestoke Limited | Chatham | 2008 |
| Ablestoke Wealth Management Limited | Chatham | 2008 |
| Ablesure Ltd | Bracknell | 2026 |
| Ableton Projects Ltd | London | 2013 |
| Ableworld Holdings (UK) Limited | Stapeley | 2014 |
| Abley Letchford Group Ltd | Hungerford | 2021 |
| Ablina Limited | Londonderry | 2023 |
| Ablongfellow Ltd | Leyburn | 2019 |
| Ablp Limited | Dewsbury | 2024 |
| Ablrate Assets Ltd | London | 2014 |
| Ablt Investments Limited | London | 2016 |
| Ably IMB Ltd | Preston | 2025 |
| Ably Resources Holdings Limited | Glasgow | 2015 |
| ABM Advisors Limited | London | 2011 |
| ABM Catering (Holdings) Limited | Warwick | 2011 |
| ABM Consultancy Limited | Leeds | 2017 |
| ABM Electrical Holdings Limited | Cheshire | 2006 |
| ABM Financial Management Limited | Sheffield | 1999 |
| ABM Group Holding Ltd | Wolverhampton | 2018 |
| ABM Holdings Limited | Milton Keynes | 2018 |
| ABM International (Holdings) Limited | Middlesex | 2014 |
| ABM Money Ltd | Newtownards | 2025 |
| ABM Solutions Group Ltd | Southampton | 2020 |
| Abmd Invest Limited | London | 2018 |
| Abme Holdings Ltd | Armagh | 2022 |
| Abmeth Holdings Ltd | Helston | 2025 |
| Abmh Estates Holding Ltd | Slough | 2026 |
| Abmh Holdings Limited | Leeds | 2016 |
| Abms Holdings Limited | Northampton | 2022 |
| Abms Partners Limited | London | 2015 |
| ABN Amro Clearing London Limited | London | 2018 |
| ABN Amro Global Nominees Limited | London | 1986 |
| ABN Finance & Leasing (Essex) Ltd | Woodford Green | 2013 |
| ABN Finance & Leasing (Herts) Ltd | Woodford Green | 2013 |
| ABN Finance & Leasing Limited | Woodford Green | 2001 |
| ABN Finance Ltd | Watford | 2023 |