| Aquamatic Group Limited | Manchester | 2020 |
| Aquamercantile Holdings Limited | Colchester | 2022 |
| Aquamercantile Limited | Colchester | 1999 |
| Aquaneo Holdings Limited | East Peckham | 2024 |
| Aquapac Group Limited | Nelson | 2021 |
| Aquaplast Limited | Southport | 2017 |
| Aquarian Group Limited | Clevedon | 2024 |
| Aquarion Holdings Limited | London | 2025 |
| Aquarius (Financial Intermediaries) Limited | London | 2017 |
| Aquarius Equity Holdings Limited | Leeds | 2005 |
| Aquarius Equity Partners Limited | Leeds | 2002 |
| Aquarius Financial (Holdings) Limited | Stockport | 2023 |
| Aquarius Financial Associates Limited | Leeds | 2024 |
| Aquarius Financial Technologies Limited | London | 2017 |
| Aquarius Five Capital Ltd | Edgware | 2024 |
| Aquarius Holdings Ltd | Barnsley | 2018 |
| Aquarius Male Ltd | West Midlands, England | 2024 |
| Aquarius Ventures Limited | London | 2017 |
| Aquarius Wealth Management Limited | Leicester | 2007 |
| Aquascape Swimming Pools (Holdings) Limited | Cheltenham | 2021 |
| Aquaseal Group Limited | Newcastle Upon Tyne | 2023 |
| Aquaserv (Holdings) Limited | Widnes | 2022 |
| Aquasign EOT Trustees Limited | Aberdeen | 2021 |
| Aquass Blue Limited | London | 2014 |
| Aquass Group PLC | London | 2015 |
| Aquastate Limited | Glasgow | 2013 |
| Aquatec Contracts Limited | Warrington | 1999 |
| Aquatec Developments Limited | Stockport | 2022 |
| Aquatech Holdings Limited | Canvey Island | 2008 |
| Aquatecnic Estate Holdings Limited | Carlisle | 2026 |
| Aquaterra Energy Group Limited | Norwich | 2017 |
| Aquatics South West (Holdings) Limited | Newton Abbot | 2025 |
| Aquavest Limited | London | 2025 |
| Aquavia Limited | Ashton-Under-Lyne | 2015 |
| Aquavista Watersides Topco Ltd | Nottinghamshire | 2021 |
| Aquavita Holdings Ltd | Brighton | 2026 |
| Aquazone Group Limited | Great Yarmouth | 2023 |
| Aqueduct Bidco Limited | London | 2021 |
| Aqueduct Investments Limited | London | 2016 |
| Aqueduct Newco 1 Limited | London | 2021 |
| Aqueduct Newco 2 Limited | London | 2021 |
| Aquiatos | Consett | 2019 |
| Aquila Bidco Limited | Manchester | 2023 |
| Aquila Business Solutions Limited | Birmingham | 2019 |
| Aquila Capital Invest UK Ltd. | London | 2022 |
| Aquila DKF Ltd | Barnsley | 2021 |
| Aquila DOR Limited | Chester | 2021 |
| Aquila Energy Group Ltd | Henley-On-Thames | 2023 |
| Aquila European Renewables PLC | London | 2019 |
| Aquila Finance Limited | Chelmsford | 2014 |
| Aquila Financial Management Limited | Exeter | 2001 |
| Aquila Global Investment UK Ltd | London | 2025 |
| Aquila Group Holdings Limited | Sandbach | 2024 |
| Aquila Group Investments Limited | London | 2016 |
| Aquila House Holdings Limited | Chelmsford | 2001 |
| Aquila House Property Limited | Chelmsford | 2011 |
| Aquila Intermediaries Limited | London | 2009 |
| Aquila International Services Limited | Holywood | 2006 |
| Aquila Investment Property Holdings Limited | Chelmsford | 2014 |
| Aquila Investment Property Limited | Chelmsford | 2014 |
| Aquila Land Holdings Limited | Kettering | 2019 |
| Aquila Management Services Limited | Airdrie | 2016 |
| Aquila Markets Limited | Wirral | 2015 |
| Aquila Midco 1 Limited | Manchester | 2023 |
| Aquila Midco 2 Limited | Manchester | 2023 |
| Aquila Partners Ltd | London | 2023 |
| Aquila Renewable Limited | Manchester | 2013 |
| Aquila Roots Limited | Kettering | 2026 |
| Aquila Specialist Housing Ltd | Loughborough | 2019 |
| Aquila Summit Limited | Auchterarder | 2024 |
| Aquila TM Limited | Kettering | 2022 |
| Aquila Topco Limited | London | 2023 |
| Aquila UW Ltd | Worthing | 2026 |
| Aquila Venture Partners Limited | Shenley | 2026 |
| Aquilae Capital Advisory Ltd | London | 2023 |
| Aquilam Group Ltd | Plymouth | 2019 |
| Aquiles Specialty Limited | London | 2025 |
| Aquilla Group Limited | Cardiff | 2022 |
| Aquillo Limited | Nottingham | 2023 |
| Aquillum Holdings Limited | Europa Boulevard | 2025 |
| Aquilo Holdings Ltd | Sunderland | 2023 |
| Aquilon Holdings Limited | Bolton | 2025 |
| Aquina Staffordshire Ltd | Stone | 2025 |
| Aquinella Investments Limited | Cobham | 2023 |
| Aquinella NO.1 Limited | Cobham | 2024 |
| Aquintaqa Group Ltd | London | 2026 |
| Aquira RE Limited | London | 2025 |
| Aquis Cards Limited | Bradford | 2009 |
| Aquis FI Limited | North London | 2023 |
| Aquis Global Limited | London | 2022 |
| Aquis Midco Limited | London | 2022 |
| Aquis Stock Exchange Limited | London | 2001 |
| Aquis Topco Limited | London | 2022 |
| Aquisify Enterprises Ltd | London | 2025 |
| Aquisita Capital Partners Limited | London | 2025 |
| Aquitania Group Limited | London | 2015 |
| Aquivium Group Ltd | London | 2026 |
| Aqumen Technology Solutions Ltd | Stoke On Trent | 2023 |
| Aqvest Capital Limited | London | 2021 |
| AR & Co Group Limited | Manchester | 2026 |