| A Maid 4 U Ltd | Other services | 2005 |
| A Meal on ME With Love C.I.C. | Agriculture & fishing | 2023 |
| A Nirola Properties Ltd | Real estate | 2024 |
| A P Bowman Decorators Ltd | Construction | 2012 |
| A Phone Shop Ipswich Limited | Wholesale & retail | 2020 |
| A Piece of England Ltd | Real estate | 2019 |
| A Piece of England Property Development Ltd | Construction | 2016 |
| A Piece of England Renovations Ltd | Real estate | 2019 |
| A R (Ipswich) Limited | Hospitality | 2014 |
| A R Bovington & Sons Limited | Transport & logistics | 2006 |
| A S Nisa Trading Limited | Professional & scientific | 2013 |
| A Salam Resourcing Limited | Administrative & support | 2022 |
| A Squared Anaesthetics Limited | Health & social care | 2023 |
| A Style LAB Co Limited | Professional & scientific | 2022 |
| A T Sport Services Limited | Arts & recreation | 2018 |
| A TAI Sports Management Limited | Arts & recreation | 2020 |
| A to B Tyres Limited | Wholesale & retail | 2017 |
| A to Z Entertainment Limited | Hospitality | 2025 |
| A to Z Warehouse Oxford Ltd | Wholesale & retail | 2024 |
| A W Goddard Fencing Ltd. | Construction | 2018 |
| A W Smart Repairs Limited | Wholesale & retail | 2009 |
| A Wicks Solutions Ltd | Construction | 2017 |
| A&A Fabrication Ltd | Construction | 2024 |
| A&A Murphy Limited | Financial services | 2025 |
| A&C Transport Ltd | Transport & logistics | 2021 |
| A&D Dolan Ltd | Arts & recreation | 2015 |
| A&D Kebab Limited | Hospitality | 2019 |
| A&F Convenience Limited | Wholesale & retail | 2026 |
| A&G Developers Private Limited | Construction | 2020 |
| A&G First Class Ltd | Transport & logistics | 2026 |
| A&G London Private Ltd | Hospitality | 2015 |
| A&G Private Ltd. | Hospitality | 2014 |
| A&H Autos Limited | Wholesale & retail | 2023 |
| A&H Step Limited | Real estate | 2024 |
| A&J Couriers 0604 Ltd | Transport & logistics | 2024 |
| A&J FOX Paving Ltd | Construction | 2022 |
| A&J Group SW Ltd | Wholesale & retail | 2023 |
| A&J Scaffold Ltd | Construction | 2023 |
| A&J Seafoods Ltd | Hospitality | 2023 |
| A&Jm Consultancy Ltd | Wholesale & retail | 2021 |
| A&L Property Management and Investments Ltd | Real estate | 2023 |
| A&M Aspects Ltd | Hospitality | 2026 |
| A&N Bookkeeping Ltd | Professional & scientific | 2020 |
| A&N Distribution Limited | Transport & logistics | 2019 |
| A&O Global Ltd | Wholesale & retail | 2026 |
| A&O Peak Services Limited | Wholesale & retail | 2018 |
| A&S Holdings (Suffolk) Ltd | Real estate | 2021 |
| A&S Logistics (Ipswich) Ltd | Transport & logistics | 2020 |
| A&S Renovations Ltd | Manufacturing | 2023 |
| A&Sons Logistics Ltd | Transport & logistics | 2024 |
| A&T Optimus Ltd | Administrative & support | 2019 |
| A-Leaf INT. UK Ltd | Professional & scientific | 2022 |
| A-Star Castles Ltd | Administrative & support | 2025 |
| A-Star Home Services Limited | Construction | 2018 |
| A-Z Private Hire Services Ltd | Transport & logistics | 2021 |
| A. Daniels Ltd | Wholesale & retail | 2020 |
| A. J. T'S. Ltd. | Wholesale & retail | 2006 |
| A. R. C. D. Associates Limited | Professional & scientific | 2002 |
| A.B. Electrical (Ipswich) Limited | Construction | 2011 |
| A.B.P. Suffolk Developments Limited | Construction | 2007 |
| A.D.A. Haulage Limited | Transport & logistics | 2017 |
| A.E. Rout & Sons Limited | Administrative & support | 1977 |
| A.F. Johnson & Sons (Farmers) Limited | Real estate | 1963 |
| A.F.S. Fire Services Ltd | Other services | 2011 |
| A.J.D. Engineering Limited | Manufacturing | 1984 |
| A.J.Thomson Ltd | Construction | 2006 |
| A.P. Laflin Builders Limited | Construction | 2003 |
| A.P.M. (EA) Ltd | Construction | 2010 |
| A.R.J. Limited | Construction | 2003 |
| A.R.M Logic Solutions Limited | Manufacturing | 2024 |
| A.S Beauty Clinic Limited | Other services | 2024 |
| A.S London Express Transport Limited | Transport & logistics | 2005 |
| A.S. Humby Investments Ltd | Real estate | 2022 |
| A.S.F.S Services Ltd | Transport & logistics | 2019 |
| A.S.K Heating Services Ltd | Construction | 2017 |
| A.S.P.E.C.T.S (Staffordshire) Ltd | Health & social care | 2019 |
| A.T.M.S. (East Anglia) Limited | Construction | 2010 |
| A.W. Mayhew (Farms) Limited | Professional & scientific | 1960 |
| A1 Fitters Limited | Construction | 2016 |
| A1 Supplies Limited | Wholesale & retail | 2003 |
| A1 Voice International Ltd | Arts & recreation | 2017 |
| A26 Consulting Limited | Real estate | 2016 |
| A2B Online Transport Limited | Transport & logistics | 2011 |
| A2B Recovery & Repair Ltd | Wholesale & retail | 2026 |
| A2E Digital Limited | Wholesale & retail | 2025 |
| A2M Limited | Construction | 2014 |
| A2M Management Limited | Professional & scientific | 2014 |
| A2M TEC Ltd | Construction | 2018 |
| A2Z Property Management Limited | Construction | 2016 |
| AA Car Import Customs Clearance Limited | Transport & logistics | 2024 |
| AA Carpentry and Maintenance Limited | Construction | 2010 |
| AA Fabrications & Machinery Ltd | Manufacturing | 2011 |
| AA Ipswich Barbers Ltd | Other services | 2022 |
| AA Motor Medic Limited | Wholesale & retail | 2012 |
| AA Pet Promotions Ltd | Administrative & support | 2018 |
| AA Properties Hull Limited | Real estate | 2026 |
| AA RR Limited | Hospitality | 2018 |
| Aa-Aspect Limited | Professional & scientific | 2022 |
| Aaaargh! Press Limited | Information & communication | 2012 |
| Aafreight Limited | Wholesale & retail | 2019 |