| Aspire Midco Limited | Bristol | 2019 |
| Aspire Personal Training Limited | Callington | 2020 |
| Aspire Pictures Ltd | Rossendale | 2020 |
| Aspire Procurement Solutions Ltd | Ulceby | 2017 |
| Aspire Public Health Ltd | Wolverhampton | 2025 |
| Aspire Sports Therapy and Massage Limited | Rotherham | 2018 |
| Aspire TAN & Beauty Ltd | Birmingham | 2018 |
| Aspire to Inspire Fitness Ltd | Mold | 2020 |
| Aspire Topco Limited | Bristol | 2019 |
| Aspire Wills Limited | Burnley | 2017 |
| Aspire Wright Education Ltd | Bristol | 2023 |
| Aspire.Aesthetic.Clinic Limited | Wembley | 2025 |
| ASPIRE2BUILD Ltd | Bristol | 2018 |
| ASPIRE2LEARN Services Ltd | Lichfield | 2020 |
| ASPIRE9 Ltd | London | 2020 |
| Aspirevia Limited | London | 2009 |
| Aspirias IBC Limited | Hythe | 2021 |
| Aspirify Limited | London | 2020 |
| Aspiring Aesthetics Ltd | Paisley | 2022 |
| Aspiringu Ltd | Caterham | 2018 |
| Aspley Aspirations CIC | Nottingham | 2023 |
| Aspley Nail & Beauty Limited | Nottingham | 2023 |
| Aspmr Ltd | Colchester | 2020 |
| Aspremont Limited | London | 2017 |
| Asprey Yacht Management Ltd | London | 2020 |
| Asprou Barbers Ltd | Newport | 2018 |
| Asps Solutions Ltd | Bolton | 2024 |
| Aspyre Aesthetics Ltd | Glasgow | 2023 |
| ASQ Recruitments Limited | Orpington | 2017 |
| Asquith Balfour Limited | London | 2023 |
| Asquith Watch Repairs Limited | Sunbury-On-Thames | 2024 |
| Asquith-Vallance Limited | Workington | 2015 |
| ASR AVS Limited | Yeadon | 2012 |
| ASR Capital Holdings Ltd | Birmingham | 2019 |
| ASR Enforcement Limited | Liverpool | 2018 |
| ASR Engineering Limited | Woking | 2009 |
| ASR Legal Services Ltd | Manchester | 2021 |
| ASR Media Tech Ltd | Royston | 2018 |
| ASR Property Maintenance Limited | Luton | 2011 |
| Asra Welfare Trust | Keighley | 2011 |
| Asraar Hair & Beauty Ltd | Birmingham | 2020 |
| Asraar Salon & Spa Ltd | Glasgow | 2024 |
| Asraar Spa Ltd | Birmingham | 2025 |
| Asrab Co Ltd | Manchester | 2021 |
| Asrg Limited | Rickmansworth | 2021 |
| Asrr Co Limited | Worthing | 2022 |
| Asrè Beauty Academy Ltd | London | 2025 |
| Assab Glasgow Limited | Glasgow | 2019 |
| Assalam Centre Maidstone Ltd | Maidstone | 2020 |
| Assani for General Trading Ltd | Manchester | 2022 |
| Assem'Ly of Messiah Family Global Outreach Ltd | London | 2025 |
| Assemble My Flat Packs Ltd | Bilston | 2025 |
| Assembleia DE Deus - Ministerio DO Belem Ltd. | London | 2008 |
| Assembleia DE Deus Brasileira EM Londres Ltd | London | 2020 |
| Assembleia DE Deus DE Londres | London | 2006 |
| Assembleia DE Deus Ministerio Fidelidade Ltd | London | 2024 |
| Assembleia DE Deus Ministerio Semeadores DE Boas Novas Ltd | London | 2010 |
| Assembleia DE Deus New Life Church Ltd | Watford | 2018 |
| Assembleia DE Deus Newbury Limited | Swindon | 2020 |
| Assembleia DE Deus Pedra Basilar CIC | London | 2024 |
| Assembleia DE Deus Vida Nova Limited | Feltham | 2012 |
| Assemblies of GOD Incorporated | Salford | 1993 |
| Assemblies of the First Born | Derby | 2014 |
| Assembly Apartments RTM Company Limited | Hainault | 2016 |
| Assembly London Ltd | London | 2011 |
| Assembly of GOD Conamad Limited | Canterbury | 2024 |
| Assembly of GOD Faith in Jesus Church | London | 2022 |
| Assembly of GOD International Ebenezer Ltd | Bridgwater | 2022 |
| Assembly of GOD Kadosh Ministry Ltd | London | 2025 |
| Assembly of GOD Koinonia Church | London | 2016 |
| Assembly of GOD Missions UK Limited | Enfield | 2023 |
| Assembly of GOD Nations for Christ Ltd | London | 2019 |
| Assembly Restaurant UK Limited | London | 2023 |
| Assensus Ltd | Worthing | 2014 |
| Asser Foundation Limited | Manchester | 2023 |
| Assertive Grooming Ltd | London | 2024 |
| Assess Claim Repair Ltd | Lytham St Annes | 2025 |
| Assess Management Limited | Wilden, Bedford | 2005 |
| Assess My Property Limited | Team Valley Trading Estate | 2023 |
| Assess the Risk Limited | Stockport | 2014 |
| Assessio Limited | London | 2023 |
| Assessly Ltd | Birmingham | 2025 |
| Assessors Direct Ltd | Birmingham | 2021 |
| Asset and Investment Management Limited | Kingston Upon Thames | 1989 |
| Asset Assure Limited | Canvey Island | 2015 |
| Asset Barber Club Ltd | Birmingham | 2023 |
| Asset Base South Tyneside Community Interest Company | South Shields | 2006 |
| Asset Disposal Services Limited | Sedgley | 2014 |
| Asset Excel Ltd | Cardiff | 2018 |
| Asset Inventories London Ltd | Cheam | 2017 |
| Asset IT Ltd | | 2003 |
| Asset Owner Advisory Board Ltd | London | 2023 |
| Asset Partners Limited | London | 2019 |
| Asset Protection Group (UK Holdings) Limited | Warrington | 2020 |
| Asset Protection Limited | Leominster | 1986 |
| Asset Realisation Group Limited | Crewe | 2022 |
| Asset Risk Consultants (UK) Limited | London | 2014 |
| Asset Safeguard (UK) Ltd | Holyhead | 2025 |
| Asset Trading Limited | Crewe | 2025 |
| Asset UK Services Limited | Stockport | 2021 |