| Abacus Organic Services Limited | Chester | 2001 |
| Abacus Payroll Bureau Limited | Hebburn | 2006 |
| Abacus Pools & Spas Ltd | Borehamwood | 2015 |
| Abacus Professional Recruitment Limited | Belfast | 2003 |
| Abacus Reservations Limited | Devon | 2002 |
| Abacus Results Limited | London | 2025 |
| Abacus Schools Financial Services Ltd | Ilford | 2013 |
| Abacus Secretarial Services Limited | | 2001 |
| Abacus Security Norwich Limited | Norwich | 2003 |
| Abacus Security Services Limited | Sevenoaks | 2016 |
| Abacus Sheet Metal Ltd | Bolton | 2011 |
| Abacus Statutory Services Limited | | 2004 |
| Abacus Support Ltd | London | 2022 |
| Abacus Traffic Surveys Ltd | Gateshead | 2015 |
| Abacus Training Group Limited | Leeds | 2008 |
| Abacus Umbrella Ltd | Norwich | 2020 |
| Abacus Valuers Limited | Newquay | 1998 |
| Abacus Window Cleaning BV Limited | Reading | 2024 |
| Abacus Window Cleaning Ltd | Camberley | 2017 |
| ABACUS24 Limited | London | 2016 |
| Abakus Group Management International Ltd | Manchester | 2016 |
| Abal Rental Limited | Halifax | 2004 |
| Abalcar Ltd | Grays | 2016 |
| Abalencor, AB Alternative Energy Corporation Ltd. | Oldham | 2008 |
| Abalon Limited | London | 2013 |
| Abalos Limited | Maidstone | 2016 |
| Abalta Limited | Wembley | 1999 |
| Abandoned Coffeeshop Software Ltd. | Warrington | 2014 |
| Abandoned Vehicle Service Ltd | Kenley | 2021 |
| Abane Care Limited | Birmingham | 2022 |
| Abanjo Investment Ltd | London | 2026 |
| Abar Trading Limited | London | 2018 |
| Abargain Limited | Edgware | 2012 |
| Abass Ltd | London | 2020 |
| Abasto Limited | London | 2008 |
| Abate Pest Management Ltd | Huntingdon | 2024 |
| Abatec Limited | Weston-Super-Mare | 2013 |
| Abatis Fire & Security Group Ltd | Grimsby | 2003 |
| Abax Verwaltungs Limited | Birmingham | 2013 |
| Abayenko Ltd | London | 2022 |
| Abaylade Global Ventures Limited | London | 2023 |
| Abayo Travel and Tour Ltd | London | 2025 |
| Abayomi Limited | Chatham | 2024 |
| Abazed Trading Co., Ltd | Kenilworth | 2025 |
| ABB Cleaning Service Ltd | Hayes | 2016 |
| ABB Consulting Ltd | Bury St. Edmunds | 2025 |
| ABB Group Limited | Scarning, Dereham | 2021 |
| ABB Master Locksmiths Ltd | Warminster | 2026 |
| Abba Driver Training Services Limited | Belfast | 2014 |
| Abba Loos Limited | Aberystwyth | 2007 |
| Abba Plant Hire Limited | Doddington Road Lincoln | 1997 |
| Abba Services Limited | Peterborough | 2026 |
| Abba-Father Facilities Management Ltd | Glasgow | 2014 |
| Abba-Rohi Consulting Ltd | Rayleigh | 2016 |
| ABBA8 Ltd | Stansted | 2018 |
| Abbacus Limited | Altrincham | 2005 |
| Abbacuss Cleaning Contracters Limited | Hull | 2012 |
| Abbas Enterprise Limited | Manchester | 2022 |
| Abbas Marquees Limited | Taunton | 2002 |
| Abbas Security Systems Limited | Chatham | 2018 |
| Abbas Tool Hire Ltd | Bristol | 2024 |
| Abbasi PVT Hire Ltd | Edinburgh | 2023 |
| Abbassi Hajj & Umrah Limited | Keighley | 2026 |
| Abbattis Risk Management Limited | Southampton | 2025 |
| Abbax Limited | Brentford | 2016 |
| Abbazabba Limited | London | 2015 |
| Abbella Properties Limited | Henley-On-Thames | 2018 |
| Abberley Landscapes Limited | Abberley | 2022 |
| Abberley Yachts Limited | London | 2014 |
| Abberly Property Limited | Wokingham | 2009 |
| Abbeville Fete Operations Ltd | London | 2026 |
| Abbeville Mews Management Ltd | London | 1987 |
| Abbeville Nannies Ltd | London | 2001 |
| Abbey Creations Ltd | Romford | 2015 |
| Abbey & FOX Safe Deposit Limited | Hounslow West | 2012 |
| Abbey (UK) Travel Limited | Edinburgh | 2008 |
| Abbey 5 Star Limited | Manchester | 2019 |
| Abbey Accountancy Services (North East) Limited | Gateshead | 2009 |
| Abbey Administration Ltd | Selby | 2024 |
| Abbey Associates Vehicle Solutions Limited | Halesowen | 2010 |
| Abbey Capital Limited | London | 2010 |
| Abbey Car Care Ltd | Hertfordshire | 2012 |
| Abbey Care Limited | Telford | 2005 |
| Abbey Care Maintenance and Renovations Ltd | Horsham | 2016 |
| Abbey Carpentry Ltd | Swindon | 2017 |
| Abbey Chemicals Properties Ltd | Great Yarmouth | 2014 |
| Abbey Cleaning Commercial Services Limited | Blairgowrie | 2010 |
| Abbey Cleaning Solutions Ltd | Whitby | 2021 |
| Abbey Commercial Services Limited | London | 1983 |
| Abbey Connect Limited | Abingdon | 2026 |
| Abbey Continental Limited | Potters Bar | 1989 |
| Abbey Contractors (South) Ltd | Spalding | 2025 |
| Abbey Cottage Residents Management Company Limited | Bristol | 2004 |
| Abbey Covered Bonds (Holdings) Limited | London | 2005 |
| Abbey Covered Bonds (LM) Limited | London | 2005 |
| Abbey Design Associates (Gloucester) Limited | Cheltenham | 2006 |
| Abbey Design Display and Exhibitions Limited | Hayle | 2001 |
| Abbey Driveways Limited | Nottingham | 2014 |
| Abbey E15 Ltd | London | 2015 |
| Abbey Environmental Services Ltd | Barrow In Furness | 2019 |