| Ardent Automation Limited | Altrincham | 2018 |
| Ardent Business Consulting Limited | Milton Keynes | 2007 |
| Ardent Contracting Services UK Limited | Chafford Hundred | 2005 |
| Ardent Digital Services Limited | Salisbury | 2019 |
| Ardent Famtech Limited | Romford | 2022 |
| Ardent Group 365 Limited | Herne Bay | 1999 |
| Ardent Intelligence Ltd | London | 2026 |
| Ardent IT Security and Resilience Ltd | Harrogate | 2017 |
| Ardent Media Productions Ltd | Stevenage | 2021 |
| Ardent Mind Tech Ltd | Manchester | 2012 |
| Ardent Networks Limited | Middlesex, Stanmore | 2019 |
| Ardent OIL Resources Limited | Ipswich | 2021 |
| Ardent Pet Company Ltd | London | 2025 |
| Ardent Ronin Consulting Ltd | Poole | 2017 |
| Ardent Software Ltd | Stockton On Tees | 2016 |
| Ardent Systems & Labs Limited | London | 2026 |
| Ardent Tech Services Limited | Watford | 2024 |
| Ardent Tech Solutions Ltd | London | 2022 |
| Ardent Technology Limited | Poole | 2005 |
| Ardent Thrive Ltd | London | 2022 |
| Ardenta Consulting Limited | Sunbury-On-Thames | 2013 |
| Ardenter Payroll Ltd | Darlington | 2018 |
| Ardentiq Limited | London | 2026 |
| Ardentisys Limited | Luton | 2008 |
| Ardentium Limited | London | 2020 |
| Ardentsys Ltd | Hampton | 2008 |
| Ardenview Consulting Limited | London | 2024 |
| Ardenworks Ltd | London | 2026 |
| Ardenyx Ltd | London | 2026 |
| Ardeo Limited | Kingston Upon Thames | 1995 |
| Ardeotis DS Limited | London | 2025 |
| Ardesley Limited | London | 2023 |
| Ardevora DPU Limited | London | 2024 |
| Ardfinnan Consulting Limited | Wells | 2015 |
| Ardgowan Software Solutions Ltd | Greenock | 2023 |
| Ardhi Digital Consulting Limited | Richmond | 2021 |
| Ardhi Verified Limited | Swanscombe | 2025 |
| Ardi Associates Ltd | London | 2009 |
| Ardiam Games Ltd | Glasgow | 2022 |
| Ardibee Consulting Ltd | London | 2015 |
| Ardiden Limited | London | 2024 |
| Ardigon Limited | Downpatrick | 2019 |
| Ardimages UK Limited | Droitwich | 2015 |
| Ardisco Limited | London | 2019 |
| Ardlin Systems Limited | Wokingham | 2004 |
| Ardlin Technologies Limited | Wokingham | 2006 |
| Ardlley Consultancy Limited | Buntingford | 2011 |
| Ardluce Limited | Belfast | 2011 |
| Ardman Limited | Dungannon | 2012 |
| Ardmax Productions Ltd | London | 2018 |
| Ardmedia Ltd | Dungannon | 2021 |
| Ardmem Consultancy Services Ltd | Kingston Upon Thames | 2021 |
| Ardmore & Beechwood Limited | London | 1958 |
| Ardmore IT Ltd | Omagh | 2022 |
| Ardmore Talent Ltd | London | 2024 |
| Ardmoyle Consulting Limited | Ballymena | 2024 |
| Ardnamara Services Ltd | Windsor | 2009 |
| Ardoc Media Ltd | West Calder | 2025 |
| Ardonio Limited | Arkley | 2019 |
| Ardoq UK Limited | London | 2018 |
| Ardor Business Insight Limited | Hythe | 2015 |
| Ardor Media Ltd | Oxford | 2025 |
| Ardor Noah Trading Co., Ltd | Beckenham | 2025 |
| Ardor Publications Ltd | London | 2026 |
| Ardor Trading Ltd | Glasgow | 2024 |
| Ardoria Ltd | York | 2007 |
| Ardortech Ltd | Wellingborough | 2025 |
| Ardorum Limited | Ilkley | 2014 |
| Ardour (Emea) Limited | London | 2016 |
| Ardour Digital Limited | Bristol | 2014 |
| Ardourtech Consulting Ltd | Harrow | 2023 |
| Ardouscorp Ltd | Croydon | 2025 |
| Ardpatrick IT Solutions Limited | Ballynahinch | 2008 |
| Ardpoint Limited | Edinburgh | 2026 |
| Ardr Botics Ltd | London | 2013 |
| Ardrith Limited | London | 2018 |
| Ardross Online Community Interest Company | By Alness | 2017 |
| Ardshieling Limited | Middlesex | 2005 |
| Ardua Ventures Ltd | Hinckley | 2012 |
| Ardum Insights Ltd | London | 2018 |
| Ardux Ltd | Taunton | 2019 |
| Ardvale Productions Ltd | London | 2022 |
| Ardvantage Limited | Tunbridge Wells | 2019 |
| Ardwen Ltd | Cardiff | 2025 |
| Ardyelle Creative Limited | London | 2024 |
| ARE Apps Ltd | Camberley | 2011 |
| ARE Friends Electric? Limited | Newton Abbot | 2023 |
| ARE Globbal Limited | London | 2021 |
| ARE They Legit Ltd | Stockport | 2026 |
| ARE WE Dead YET Ltd | London | 2016 |
| ARE WE Human Ltd | Poole | 2026 |
| ARE WE Live Ltd | London | 2024 |
| ARE YOU Ltd | Lincoln | 2019 |
| ARE YOU Serious? Records Limited | London | 2024 |
| Area 1 Ltd | London | 2013 |
| Area 360 Media Ltd | London | 2025 |
| Area 39 Ltd | London | 2023 |
| Area 4 Films Limited | London | 2020 |
| Area 404 Ltd | Leamington Spa | 2020 |
| Area 44 Ltd | Romford | 2021 |