| Acuity Professional Retirement Benefit Solutions Ltd | Bexhill | 2018 |
| Acuity Research Limited | London | 2010 |
| Acuity Secretarial Services Ltd | Wotton-Under-Edge | 2026 |
| Acuity Sisters Ltd | London | 2016 |
| Acuity Translations Limited | Chepstow | 2014 |
| Acuity UK Limited | Cobham | 2006 |
| Acuma Technology Limited | Sheffield | 2012 |
| Acumen Asset Management Limited | Nottingham | 2000 |
| Acumen Financial Planning Limited | Westhill | 2001 |
| Acumen Fire and Security Limited | Annesley | 2017 |
| Acumen Global Compliance Ltd | London | 2024 |
| Acumen Global Partners Limited | Covent Garden | 2009 |
| Acumen Holdings (Aberdeen) Limited | Aberdeen | 2001 |
| Acumen HR Services Ltd | Leeds | 2018 |
| Acumen Investment Solutions Limited | London | 2016 |
| Acumen London Consulting Ltd | Keighley | 2016 |
| Acumen Maintenance Services Ltd | London | 2010 |
| Acumen Models Limited | Manchester | 2012 |
| Acumen Outsourcing Ltd | London | 2024 |
| Acumen Property Services Ltd | London | 2012 |
| Acumen Recruitment Limited | London | 2019 |
| Acumen Services Ltd | London | 2024 |
| Acumen Talent Acquisition Ltd | Abertridwr | 2025 |
| Acumen Ventures Debt Partners Limited | London | 2024 |
| Acumensa Consulting Ltd | Lancing | 2019 |
| Acumension Limited | Manchester | 1998 |
| Acumin Consulting Limited | London | 1998 |
| Acumind Educational Consultancy Limited | London | 2024 |
| Acumum Corporate & Fiduciary Ltd | London | 2020 |
| Acuna Ents Limited | Sheffield | 2025 |
| Acupaye Limited | Newcastle Upon Tyne | 2024 |
| Acupoint Ltd | Stone | 2013 |
| Acupuncture Association of Chartered Physiotherapists Limited | Peterborough | 2006 |
| Acupuncture Training Ltd | Tewkesbury | 2019 |
| Acura Inventories Limited | Rye | 2019 |
| Acuro Associates Ltd | Petersfield | 2014 |
| Acut Wholesale Ltd | Sutton-In-Ashfield | 2025 |
| Acute Audio Productions Limited | Lancing | 2012 |
| Acute Civil Engineering Limited | Clitheroe | 2016 |
| Acute HR Limited | London | 2018 |
| Acute Management Limited | Barnet | 2021 |
| Acute New Elevators Ltd | Rochester | 2023 |
| Acute Pest Solutions Ltd | Darlington | 2015 |
| Acute Property and Finance Solutions Ltd | Mexborough | 2019 |
| Acutec Consulting Ltd | Anerley | 2014 |
| Acutum Consulting Limited | Chesham | 2014 |
| Acuvis Ltd | Bacup | 2023 |
| Acux Limited | St Helens | 2025 |
| ACV Limited | Wallingford | 2017 |
| ACW (Holdings) Limited | Inverurie | 2015 |
| ACW Car Wash Ltd | Canvey Island | 2019 |
| ACW Drainage Solutions Limited | Tenterden | 2018 |
| ACW Electrical Solutions Ltd | Carlisle | 2017 |
| ACW Racing Limited | Tarporley | 2019 |
| ACW Security Ltd | South Croydon | 2024 |
| ACW Trees Limited | Droitwich Spa | 2023 |
| Acwila Ltd | Menai Bridge | 2024 |
| Acwyre Limited | Retford | 2011 |
| ACX Therapeutics Limited | Cambridge | 2024 |
| ACY Fire and Security Systems Ltd | Margate | 2019 |
| Aczone Limited | Stockport | 2025 |
| Ac\Dc Jointing Ltd | Bromley | 2014 |
| AD & MK Ltd | Ruislip, | 2022 |
| AD (US) Finance | London | 2003 |
| AD 01 MI Consultancy Ltd. Ltd | High Wycombe | 2010 |
| AD 2000 Computing Limited | Halesowen | 1997 |
| AD Acharya Limited | Greenford | 2015 |
| AD Administration Limited | Sheffield | 2024 |
| AD Aerospace Limited | Stockport | 1995 |
| AD Agronomy Limited | Blandford Forum | 2013 |
| AD Astra Creative Arts Ltd | Wembley | 2025 |
| AD Astra Human Performance Ltd | Felixstowe | 2021 |
| AD Astra Productions Limited | Stockport | 2012 |
| AD Astra Recruitment Ltd | Newcastle Upon Tyne | 2019 |
| AD Atelier Ltd | Wantage | 2025 |
| AD Atlantic Finance Limited | London | 2004 |
| AD Atlantic Limited | Camberley | 2020 |
| AD Atrium Limited | London | 2022 |
| AD Audio Ltd | Swindon | 2025 |
| AD Beauty Salon Ltd | London | 2024 |
| AD Bespoke Ltd | London | 2019 |
| AD Bradley Music Limited | Colchester | 2005 |
| AD Brierley Engineering Limited | Warrington | 2016 |
| AD Business Consulting Ltd | London | 2023 |
| AD Business Recovery Limited | Colchester | 2003 |
| AD Business Services Limited | Manchester | 2024 |
| AD Buyers Club Ltd | Eastbourne | 2020 |
| AD Canada Financing Company | London | 2003 |
| AD Capital Markets Ltd | Richmond | 2020 |
| AD Carpet Cleaning Limited | Dundee | 2019 |
| AD Chinese Centre Limited | Crawley | 2017 |
| AD Cleaning Group Ltd | Hornchurch | 2025 |
| AD Cleaning Services Edinburgh Ltd | Edinburgh | 2020 |
| AD Cleaning Services Ltd | Seaham | 2024 |
| AD Cleaning Solutions Ltd | Bolton | 2025 |
| AD Colour Limited | Walton On Thames | 2004 |
| AD Consulting Group Ltd | Leeds | 2025 |
| AD Consulting Limited | Worcester | 2020 |
| AD Consulting Services Limited | Birmingham | 2016 |
| AD Contract Cleaning Ltd | Barnet | 2006 |