| Accident Solutions (Midlands) Limited | Codsall | 2007 |
| Accident Specialists Credit Hire Ltd | Peterborough | 2018 |
| Accident Specialists Ltd | Heanor | 2008 |
| Accident Time Limited | Sutton Coldfield | 2008 |
| Accident Victims Helpline Ltd | Ilford | 2006 |
| Accidents Assist Ltd | London | 2017 |
| Accio Lumos Ltd | London | 2020 |
| Accio Recruitment Ltd | Chapel St. Leonards | 2021 |
| Accipio Solutions Limited | Uckfield | 2008 |
| Accirro Ltd | Rotherham | 2022 |
| Acclaim Artists Ltd | London | 2016 |
| Acclaim Driving School Limited | Bristol | 2002 |
| Acclaim Handling Limited | Purfleet | 1988 |
| Acclaim Marquees Limited | Ilford | 2011 |
| Acclaim Recruitment Limited | Kent | 2003 |
| Acclaim Training Ltd. | Beckermet | 2005 |
| Acclaimed Castings Ltd | Newmarket | 2019 |
| Acclaimed Cleaning Ltd | Grange-Over-Sands | 2023 |
| Acclaimed Security Services Ltd | Leeds | 2020 |
| Accleaning Ltd | Manchester | 2025 |
| Acclem International Limited | London | 2019 |
| Acclimatise Group Ltd | Manchester | 2004 |
| Acclivity Consulting Limited | London | 2010 |
| Acclivity Solutions Ltd | Leicester | 2018 |
| Acclivity Ventures Limited | London | 2020 |
| Accolade (UK) Limited | London | 2004 |
| Accolade Corporate Events Limited | Cheltenham | 2002 |
| Accolade Foods Limited | Grimsby | 2007 |
| Accolade Holdings Ltd | Maidenhead | 2018 |
| Accolade Marketing Limited | Harwood | 2007 |
| Accolade Social Care CIC | Warrington | 2021 |
| Accolade Talent Group Limited | Tiverton | 2026 |
| Accolade Worldwide Limited | Blackburn | 2022 |
| Accolo Limited | Bicester | 2023 |
| Accology Pays Limited | Horwich | 2024 |
| Accommodation Bookings Operations & Domestic Experts Ltd | London | 2025 |
| Accommodation Lettings Ltd | Manchester | 2018 |
| Accommodation Norwich Ltd | Norwich | 2024 |
| Accommodation Plus Limited | Faversham | 2002 |
| Accommodo UK Limited | Milton Keynes | 2023 |
| Accommotel Ltd | London | 2007 |
| Accomodation Solutions Ltd | Mitcham | 2022 |
| Accomodo Enterprise Ltd | Reading | 2021 |
| Accomodo Living Ltd | Bromborough | 2025 |
| Accomodoo.Com Ltd | London | 2025 |
| Accompany Travel Limited | Edgware | 2018 |
| Accomplish Debt Free Limited | Droylsden | 2019 |
| Accomplish Today Limited | Lincoln | 2014 |
| Accomplished Contract Services Ltd. | Crayford | 1997 |
| Accopay Ltd | Norwich | 2026 |
| Accord Audio Visual Ltd | Eastbourne | 2023 |
| Accord Business Partnerships Limited | Aberdeen | 2010 |
| Accord Business Solutions Limited | Inverness | 2020 |
| Accord Dispute Resolution Ltd | Liverpool | 2025 |
| Accord Europe Limited | London | 2014 |
| Accord General Services Limited | London | 2013 |
| Accord Limited | London | 1999 |
| Accord Management Services Limited | Newcastle Upon Tyne | 1994 |
| Accord Marine Service Ltd | Purley | 2007 |
| Accord Music Productions Limited | London | 2013 |
| Accord Property Management Limited | Pinner | 2005 |
| Accord Recruitment Ltd | Liverpool | 2014 |
| Accord Resourcing Ltd | Sutton | 2021 |
| Accord Staffing Ltd | Sittingbourne | 2025 |
| Accord Technical & Security Limited | Waterlooville | 2004 |
| Accordance Care Services Limited | Milton Keynes | 2024 |
| Accordcare Management Limited | Enfield | 2020 |
| Accordia Business Support Ltd | London | 2025 |
| Accordia Recruitment Limited | London | 2008 |
| Accordis Global Limited | Milton Keynes | 2026 |
| Account and Services Limited | Slough | 2017 |
| Account Filer Ltd | Birmingham | 2016 |
| Account Management NOW Ltd | Brighton | 2015 |
| Account on Ltd | Ipswich | 2018 |
| Accountability Europe Limited | London | 2015 |
| Accountability Recruitment (South) Limited | Portsmouth | 1997 |
| Accountability Recruitment Southern Ltd | Waterlooville | 2024 |
| Accountable Growth Ltd | Chesham | 2022 |
| Accountable Recruitment Limited | Liverpool | 2011 |
| Accountable Security Solutions Limited | Hyde | 2026 |
| Accountable Talent Ltd | Rayleigh | 2026 |
| Accountancy & Finance Personnel Limited | Nottingham | 2007 |
| Accountancy & Tax Returns Limited | London | 2009 |
| Accountancy 1 Limited | Droitwich | 2023 |
| Accountancy Action Limited | Borehamwood | 2001 |
| Accountancy Additions Limited | Addlestone | 1998 |
| Accountancy Administrative Services Limited | Grantham | 1995 |
| Accountancy Capital Ltd | London | 2024 |
| Accountancy Connect Ltd | Southampton | 2023 |
| Accountancy Contracting Solutions Limited | Swindon | 2019 |
| Accountancy Crunch Ltd | Leigh-On-Sea | 2022 |
| Accountancy Elite Limited | Rugby | 2016 |
| Accountancy Expertise Limited | Southsea | 1996 |
| Accountancy Mentor Limited | Devizes | 2011 |
| Accountancy People 4U Limited | Maldon | 2009 |
| Accountancy Plus Financial Planning Ltd | Bolton | 2019 |
| Accountancy Positions Ltd | Felixstowe | 2022 |
| Accountancy Practice Assistant Limited | Southend-On-Sea | 2022 |
| Accountancy Recruit Limited | Blackburn | 2016 |
| Accountancy Recruitment Consultants Limited | Worthing | 1997 |