| A L O Car Wash Ltd | Administrative & support | 2022 |
| A M M Aengineering Limited | Administrative & support | 2016 |
| A Mehta Consultancy Services Ltd | Health & social care | 2018 |
| A Miles Commercial Services Ltd | Professional & scientific | 2022 |
| A N City Plumbing and Heating Limited | Construction | 2021 |
| A N Property Services and Developments Limited | Real estate | 2026 |
| A New Beginning Physical Well-Being Solutions Limited | Other services | 2024 |
| A New Beginning Solution-Focused Hypnotherapy Limited | Health & social care | 2024 |
| A P Financial Solutions Ltd | Financial services | 2003 |
| A P Kyte Ltd | Professional & scientific | 2025 |
| A R Burnett Accounting Limited | Professional & scientific | 2026 |
| A R Networks Limited | Information & communication | 2012 |
| A Reid Holdings Limited | Financial services | 2019 |
| A Star Carrier Ltd | Transport & logistics | 2018 |
| A Tiny BIT Different Ltd | Information & communication | 2021 |
| A Topping Rigging Ltd | Information & communication | 2025 |
| A Traser Limited | Professional & scientific | 2016 |
| A Traylor & Sons Limited | Construction | 2003 |
| A Wainwright Ltd | Administrative & support | 2011 |
| A&A Consulting (NW) Limited | Health & social care | 2023 |
| A&Ah Ltd | Real estate | 2005 |
| A&B Chauffeur Service Ltd | Transport & logistics | 2022 |
| A&D Management Services Limited | Administrative & support | 2013 |
| A&D Social Care Ltd | Professional & scientific | 2024 |
| A&J Independent Ltd | Health & social care | 2026 |
| A&J Thompson Solutions Limited | Construction | 2023 |
| A&K Cleaning Solutions Limited | Administrative & support | 2026 |
| A&L Meat Limited | Manufacturing | 2024 |
| A&Ln Food Ltd | Wholesale & retail | 2026 |
| A&P DD Trailer Control Ltd | Wholesale & retail | 2020 |
| A&S Cheadle Ltd | Wholesale & retail | 2026 |
| A&S Environmental Limited | Water & waste | 2025 |
| A&S Smith Properties Ltd | Real estate | 2020 |
| A&S Supplies Ltd | Wholesale & retail | 2025 |
| A&W Brothers Properties Ltd | Real estate | 2025 |
| A-Best Support Ltd | Health & social care | 2025 |
| A-Lister Consulting Limited | Professional & scientific | 2012 |
| A-Nd Design Studio Ltd | Professional & scientific | 2018 |
| A-Team Props Ltd | Real estate | 2021 |
| A-Z Digital Solutions Ltd | Information & communication | 2017 |
| A-Z Remedy’S Ltd | Wholesale & retail | 2025 |
| A. & J. Investments Limited | Construction | 1980 |
| A. Allen Conservation & Restoration Limited | Manufacturing | 2003 |
| A. Burns Limited | Other services | 2001 |
| A. D. S. Investments Limited | Real estate | 1961 |
| A. J. Tyzack & Co Limited | Administrative & support | 2000 |
| A. Jensen Snekkerservice OG Vedlikehold Ltd | Administrative & support | 2010 |
| A. Noble Electrical Services Ltd | Construction | 2026 |
| A.C.M. Financial Services Ltd. | Financial services | 1999 |
| A.E. & A.L.C. Limited | Real estate | 1983 |
| A.G.S. (NW) Limited | Construction | 2010 |
| A.H Northwest Ltd | Wholesale & retail | 2025 |
| A.H. Video Leasing Limited | Transport & logistics | 1986 |
| A.H.Tomlinson Parbans Limited | Manufacturing | 1956 |
| A.Iqbalandsonsbuilders Ltd | Construction | 2024 |
| A.J. Bristow Transport Ltd | Transport & logistics | 2015 |
| A.K.S Aika Source Company PH Ltd | Wholesale & retail | 2025 |
| A.P. Windows Limited | Construction | 2005 |
| A.R.J.R.W Consultancy Limited | Administrative & support | 2011 |
| A.S. Drilling Limited | Wholesale & retail | 2000 |
| A1 Lock & Safe Limited | Administrative & support | 2018 |
| A1 Plastering Services Ltd | Construction | 2020 |
| A1 Pro-Mac Drilling Limited | Administrative & support | 2016 |
| A1 Properties MCR Ltd | Real estate | 2022 |
| A1 Reclaimed Brick Specialists Limited | Wholesale & retail | 2009 |
| A1 Selection Property Services Limited | Construction | 2016 |
| A2 Lock & Safe Limited | Other services | 2023 |
| A2Z Extras Limited | Other services | 2007 |
| A2Z Skip Hire Limited | Water & waste | 2022 |
| A3 Group Ltd | Wholesale & retail | 2016 |
| A6 Blueline Taxis Limited | Professional & scientific | 2014 |
| A6 Fast Fit Centre Ltd | Wholesale & retail | 2023 |
| A6FONEMASTER Ltd | Wholesale & retail | 2026 |
| A7 Transport Ltd | Transport & logistics | 2018 |
| A? OK! Connect Ltd | Information & communication | 2025 |
| AA Educational Supplies Limited | Education | 2017 |
| AA Manchester PVT Ltd | Health & social care | 2026 |
| AA Prosjekt Ltd | Administrative & support | 2009 |
| AA Social Work Solution Ltd | Health & social care | 2026 |
| AA Textiles Ltd | Wholesale & retail | 2015 |
| Aa-F Recruitment Limited | Administrative & support | 2023 |
| AAA Build Limited | Construction | 2016 |
| AAA MCR Ltd | Wholesale & retail | 2025 |
| AAA Miles Solution Ltd | Transport & logistics | 2022 |
| AAA Safety Supplies Limited | Wholesale & retail | 2005 |
| Aaaretailers Ltd | Wholesale & retail | 2021 |
| AAF Property Ltd | Real estate | 2022 |
| AAH Electrical Limited | Construction | 2014 |
| AAJ Homes Limited | Real estate | 2024 |
| AAK Online Store Limited | Wholesale & retail | 2025 |
| Aakm Logistics Ltd | Transport & logistics | 2023 |
| Aalto Homes Ltd | Real estate | 2021 |
| Aamchi Mumbai Limited | Hospitality | 2022 |
| Aarav Houzing Ltd | Real estate | 2021 |
| Aardvark Consultants Limited | Information & communication | 1992 |
| Aardvark Embedded Solutions Limited | Information & communication | 2001 |
| Aaron Access Limited | Construction | 2014 |
| Aaron Engineering Group Limited | Construction | 2020 |
| Aaron Guard Limited | Administrative & support | 2017 |
| Aaron HV Systems Limited | Construction | 2015 |