| ABS Broadcast Limited | London | 2011 |
| ABS Interiors London Ltd | Tooting | 2025 |
| ABS Property Solutions Ltd | Oldham | 2024 |
| ABS Studios Limited | London | 2014 |
| Absbodyhenry Ltd | London | 2024 |
| Abscent PTY Limited | Milton Keynes | 2025 |
| Abshir Advisors Ltd | London | 2014 |
| Absl Holdings Limited | Chelmsford | 2014 |
| Abso Home Limited | Beckenham | 2021 |
| Abso Limited | Nuneaton | 2015 |
| Absolute Ascend International Ltd | London | 2013 |
| Absolute Bargain Ltd | Leamington Spa | 2021 |
| Absolute Beds Limited | Hampton | 2007 |
| Absolute Divorce Limited | Abingdon | 2003 |
| Absolute Driven Limited | Worcester | 2011 |
| Absolute Fire Consultancy Ltd | St Lythans | 2006 |
| Absolute Guff Ltd | Gloucester | 2021 |
| Absolute Healthcare West Midlands Limited | Rainworth, Mansfield | 2018 |
| Absolute Hedges & Trees Ltd | Bristol | 2024 |
| Absolute Holdings Limited | Derby | 2021 |
| Absolute Mobility Solutions Ltd | Bracknell | 2016 |
| Absolute Murder Limited | Liverpool | 2005 |
| Absolute Publishing Limited | Kings Langley | 2014 |
| Absolute Recruit EOT Ltd | Welwyn Garden City | 2024 |
| Absolute South Ltd | Bridgwater | 2011 |
| Absolute Steel Framing Limited | Smethwick | 2018 |
| Absolute Truth Limited | York | 2024 |
| Absolute UK Software Company Limited | Birmingham | 2015 |
| Absolute Zero Limited | Faversham | 2014 |
| Absolutely Couriers Limited | Warwick | 2016 |
| Absolutely Fibreglass Ltd | Hull | 2024 |
| Absolutely Properties Limited | Preston | 2021 |
| Abstract (UK) Limited | London | 2007 |
| Abstract Cakes Ltd | London | 2023 |
| Abstract Design to Light Limited | Lutterworth | 2004 |
| Abstract Legal Holdings Limited | Manchester | 2004 |
| Abstract Lighting Limited | Lutterworth | 2010 |
| Abstract Partners Limited | Birmingham | 2012 |
| ABT Eier Limited | London | 2010 |
| ABT Helse Limited | London | 2010 |
| Abterra Ltd | Bournemouth | 2018 |
| Abtm Associates Ltd | Bolton | 2018 |
| Abtomnkc Trading Co., Ltd | West Midlands, England, | 2023 |
| ABU Dhabi Asset Management Limited | Edinburgh | 2023 |
| ABU Dhabi Consulting Group Limited | Cirencester | 2020 |
| Abubakr Masjid Scotland | Glasgow | 2025 |
| Abundance Estate 777 Ltd | Manchester | 2022 |
| Abundantenergy Limited | Beckenham | 2022 |
| Abutra Engineering Ltd | London | 2025 |
| ABV61 Ltd | Huntingdon | 2024 |
| Abwood Machine Tools Limited | Folkestone | 1983 |
| Abyagn Ltd | London | 2019 |
| AC Artwork Creative Ltd | Abingdon | 2015 |
| AC Automotive Electrical Limited | Tamworth | 2019 |
| AC Cables Limited | High Wycombe | 1993 |
| AC Custom Coatings Limited | Winchester | 2012 |
| AC Design Group Co., Ltd | London | 2018 |
| AC Global Yachting Ltd | Blackpool | 2024 |
| AC Gold Energy Limited | Stirling | 2014 |
| AC Group Ltd | Harrow | 2025 |
| AC Heritage Ltd | Weybridge | 2007 |
| AC Industries Co., Ltd | Kington | 2014 |
| AC Law Associates Limited | London | 2024 |
| AC Professional Services Ltd | Thornton Heath | 2024 |
| AC Projects Ltd | Liverpool | 2019 |
| Ac&H 181 Limited | Hamilton | 2003 |
| Ac&H 21 Limited | Edinburgh | 1998 |
| Ac&H 36 Limited | South Queensferry | 1999 |
| Ac&H 58 Limited | Prestonpans | 1999 |
| ACA Lucinet Limited | Cardiff | 2025 |
| ACA Williams Consulting Ltd | London | 2019 |
| Acacia Investing Limited | Dorchester | 2020 |
| Acacia People Partners Limited | Llanelli | 2023 |
| Academic Advancement Ltd | Normanton | 2022 |
| Academic Anaesthesia Limited | Abingdon | 2005 |
| Academium Ltd | Leeds | 2010 |
| Academy 2828 Limited | Leeds | 2001 |
| Academy 92 Asia Limited | Manchester | 2017 |
| Academy Associates Limited | London | 2000 |
| Academy Business Solutions Limited | London | 2012 |
| Academy Consulting Solutions Trustee Limited | Sevenoaks | 2020 |
| Academy for Advanced Studies and Training UK International Limited | London | 2022 |
| Academy of Aromatherapy Ltd | Hinckley | 2013 |
| Academy of Beauticians and Aesthetics Ltd | Tamworth | 2019 |
| Academy Point Limited | Marlow | 2017 |
| Academy Projects (Archaeology.Architecture) Ltd | London | 2008 |
| Academy Software Products Ltd | Reading | 2009 |
| Academy Windows Ltd | Reading | 2007 |
| Acadia Developments Ltd | Sandy | 2022 |
| Acadia Racing Ltd | Bromley | 2023 |
| Acar Yachting Ltd | Bromley | 2024 |
| Acartos Ltd | Hailsham | 2011 |
| Acaso Ltd | Cambridge | 2009 |
| Acasta Homes Limited | Cheltenham | 2022 |
| ACB Projects Limited | Bury | 2007 |
| ACB Schweiz Limited | London | 2019 |
| Acbel Polytech (UK) Limited | | 2003 |
| ACC Travel Limited | Beckenham | 2016 |
| Accahome Limited | London | 2012 |
| Accai Limited | Northampton | 2024 |