| Ardent Advisory Ltd | Information & communication | 2026 |
| Ardent Associates LP | | 2011 |
| Ardent Ebony Uplift Ltd | Construction | 2025 |
| Ardent Games LP | | 2018 |
| Ardent Sailing Ltd | Education | 2020 |
| Ardenta Leader (UK) LP | | 2014 |
| Ardenta Leader LP | | 2014 |
| Ardenta Mobile LP | | 2016 |
| Ardeo Search Ltd | Administrative & support | 2022 |
| Ardessie Properties Ltd | Real estate | 2025 |
| Ardfin Estate Limited | Hospitality | 2010 |
| Ardgowan Limited | Other services | 2025 |
| Ardgowan PM Limited | Professional & scientific | 2011 |
| Ardian ACS I L.P. | | 2023 |
| Ardian Capital Asia IV L.P. | | 2015 |
| Ardian Chile Middle Market Primary Fund L.P. | | 2018 |
| Ardian Dgam ACS L.P. | | 2025 |
| Ardian Direct Asia III L.P. | | 2014 |
| Ardian Infrastructure Secondaries Reveille Sidecar L.P. | | 2022 |
| Ardian Latam Middle Market II LP | | 2021 |
| Ardian Naev ACS L.P. | | 2024 |
| Ardian Primary Fund Viii L.P. | | 2017 |
| Ardian Primary VII L.P. | | 2015 |
| Ardian PV CS L.P. | | 2023 |
| Ardian Secondary Infra IX AFP Capital Co-Investment L.P. | | 2026 |
| Ardian Secondary Infra IX Buckeye Co-Investment L.P. | | 2025 |
| Ardian Secondary Partnership L.P. | | 2017 |
| Ardian SMB L.P. | | 2022 |
| Arditech LP | | 2012 |
| Ardkinglas Land Limited | Construction | 2005 |
| Ardle Ltd | Real estate | 2019 |
| Ardmillan Orthodontics Limited | Health & social care | 2008 |
| Ardmore Energy Limited | Professional & scientific | 2010 |
| Ardmore Limited | Administrative & support | 2022 |
| Ardmore SLP | | 1998 |
| Ardmuir (Pittodrie Place) Ltd | Real estate | 2015 |
| Ardmuir Limited | Real estate | 1997 |
| Ardoch Loch Lomond Limited | Hospitality | 2021 |
| Ardonia LP | | 2015 |
| Ardpoint Limited | Information & communication | 2026 |
| Ardrossan Wind Farm (Scotland) Limited | Energy | 2003 |
| Ardtoe Aquatech Limited | Agriculture & fishing | 2022 |
| Ardunan Commercial Contracts Limited | Professional & scientific | 2024 |
| Ardvar Highlands Management Limited | Real estate | 2025 |
| Ardwall Farms Limited | Agriculture & fishing | 1987 |
| Ardyne Estates Limited | Agriculture & fishing | 2012 |
| Ardyne Organic Farms Ltd | Agriculture & fishing | 2015 |
| Areal Inter LP | | 2012 |
| Areen for Investment Ltd | Other services | 2024 |
| Areford Estate LP | | 2015 |
| Arek Catering Limited | Hospitality | 2023 |
| Arena Alliance LP | | 2016 |
| Arends Industries LP | | 2017 |
| Arenite Consultancy Ltd | Professional & scientific | 2023 |
| Arenite Limited | Other services | 2020 |
| Arens Corp. LP | | 2017 |
| Ares Capital Europe III (D) Feeder, L.P. | | 2015 |
| Ares Capital Europe III (D), L.P. | | 2015 |
| Ares Capital Europe III (E), L.P. | | 2015 |
| Ares CSF LLP | | 2014 |
| Ares European Property Enhancement Partners II, L.P. | | 2015 |
| Ares Management UK (GP) Limited | Financial services | 2012 |
| Ares UK CSF GP, L.P. | | 2012 |
| Aretec Engineering Ltd | Professional & scientific | 2026 |
| Aretech LP | | 2014 |
| Aretium Limited | Information & communication | 2026 |
| Arey Solutions LP | | 2015 |
| Arezzo LP | | 2004 |
| ARF Group Ltd | Agriculture & fishing | 2023 |
| Arfans Taxi Limited | Transport & logistics | 2012 |
| Argan Carry Limited Partnership | | 2006 |
| Argan Executive Co-Investment Limited Partnership | | 2006 |
| Argegno SP | | 2003 |
| Argent and Sable Limited | Manufacturing | 2021 |
| Argent Retail LP | | 2016 |
| Argenta General Partner II LLP | | 2021 |
| Argenta General Partner Limited | Administrative & support | 1997 |
| Argenta SLP Continuity Limited | Financial services | 2004 |
| Argenti Mundi Limited | Wholesale & retail | 2023 |
| Argentinian Foodies Ltd | Hospitality | 2022 |
| Argento Property Ltd | Households | 2012 |
| Argentry Consulting Ltd | Professional & scientific | 2017 |
| Argentum Business Solutions LP | | 2016 |
| Argentum Inter LP | | 2012 |
| Argentum Trade LP | | 2017 |
| Argeo Subsea Ltd | Professional & scientific | 2024 |
| Argeon Trade LP | | 2016 |
| Argo (Europe) LP | | 2015 |
| Argo Consult LP | | 2016 |
| Argold International LP | | 2016 |
| Argoline Group LP | | 2016 |
| Argolis LP | | 2003 |
| Argonaut Capital Partners LLP | | 2005 |
| Argus Partners LP | | 2017 |
| Argyle Backpackers (Edinburgh) Limited | Hospitality | 2024 |
| Argyle Commercial Finance Limited | Financial services | 2024 |
| Argyle Energy Limited Liability Partnership | | 2001 |
| Argyle Place Properties Limited | Real estate | 2016 |
| Argyll Estates Ltd | Construction | 2011 |
| Argyll Hydro Management Limited | Professional & scientific | 2018 |