| After Glory Limited | Manufacturing | 2009 |
| After Hours Events Limited | Administrative & support | 2024 |
| After Meals Ltd | Hospitality | 2025 |
| After School Base Ltd | Health & social care | 2024 |
| After the Bell School Support Ltd | Education | 2022 |
| After-Hours Management Ltd | Professional & scientific | 2025 |
| Aftermath Apparel Limited | Wholesale & retail | 2016 |
| Aftermath Footwear Limited | Wholesale & retail | 2018 |
| AFX Markets Ltd | Financial services | 2011 |
| Afzaal & Sons Limited | Hospitality | 2024 |
| Afzal and Sons Ltd | Other services | 2018 |
| Afzal MCR Ltd | Real estate | 2016 |
| Afzal&Co Ltd | Real estate | 2021 |
| AG & NJ Solutions Limited | Construction | 2019 |
| AG Adams Property Limited | Real estate | 2020 |
| AG Carcult Ltd | Wholesale & retail | 2011 |
| AG Construction Projects Limited | Construction | 2016 |
| AG Danarus IMC Ltd | Wholesale & retail | 2014 |
| AG Estates & Investments Ltd | Real estate | 2026 |
| AG Family Properties Ltd | Real estate | 2025 |
| AG Gold Properties Limited | Real estate | 2022 |
| AG Grands Commercial Investment Ltd | Real estate | 2024 |
| AG Grands Property Investments Limited | Households | 2022 |
| AG Health Team Ltd | Wholesale & retail | 2023 |
| AG Horizon Limited | Real estate | 2025 |
| AG Internal Solutions Ltd | Construction | 2025 |
| AG London Properties 2 Limited | Real estate | 2021 |
| AG Media Ltd. | Professional & scientific | 2017 |
| AG Motor Care Limited | Wholesale & retail | 2017 |
| AG Power Services Ltd | Information & communication | 2018 |
| AG Real Estate UK IL Limited | Real estate | 2022 |
| AG Resources Services Limited | Wholesale & retail | 2016 |
| AG Solicitors Ltd. | Professional & scientific | 2015 |
| AG Tech Services Ltd | Manufacturing | 2017 |
| AG Translation Services Ltd | Professional & scientific | 2017 |
| AG Walker Ltd | Other services | 2022 |
| Ag-Bio Limited | Professional & scientific | 2015 |
| AG7 Construct Ltd | Manufacturing | 2022 |
| AGA Food Limited | Wholesale & retail | 2006 |
| AGA Plumbing & Heating Limited | Construction | 2015 |
| AGA Renewables Ltd | Construction | 2023 |
| Agaa Enterprise Ltd | Wholesale & retail | 2026 |
| Agalia Dynasty Limited | Wholesale & retail | 2024 |
| Agam Ltd | Wholesale & retail | 2019 |
| Agamed Ltd | Health & social care | 2019 |
| Agamemnon 2014 Ltd | Administrative & support | 2014 |
| Agan Trading Ltd | Real estate | 2024 |
| Agape Consultants Ltd | Professional & scientific | 2025 |
| Agape Enterprise Limited | Hospitality | 2016 |
| Agape Security Ltd | Administrative & support | 2018 |
| Agape Solution Ltd | Wholesale & retail | 2021 |
| Agapi Apartments Limited | Real estate | 2023 |
| Agapol Ltd | Real estate | 2024 |
| Agarwal Anaesthetics Limited | Health & social care | 2021 |
| Agate Ethnic Ltd | Wholesale & retail | 2023 |
| Agateshaw Ltd | Real estate | 2021 |
| Agathos Foods Limited | Wholesale & retail | 2016 |
| AGB Asset Pole Ltd | Wholesale & retail | 2020 |
| AGB Electrical MCR Limited | Construction | 2020 |
| AGB Holdings Ltd | Real estate | 2024 |
| AGB North Ltd | Construction | 2026 |
| AGB Pro Ltd | Wholesale & retail | 2020 |
| Agb-Tech Ltd | Manufacturing | 2016 |
| Agbonmiregun Ventures Ltd | Health & social care | 2025 |
| AGC Company for Trading and Construction Ltd | Construction | 2026 |
| Agchau Ltd | Wholesale & retail | 2019 |
| AGD Construction Ltd | Construction | 2022 |
| AGD Power Consultants Limited | Professional & scientific | 2018 |
| AGD Supplies Ltd | Wholesale & retail | 2026 |
| Agdee Limited | Public administration | 2023 |
| Agdl Limited | Construction | 2025 |
| AGE Concern Manchester | Health & social care | 2000 |
| AGE Concern Manchester (Care) Limited | Health & social care | 2010 |
| AGE Concern Manchester Trading Co. Ltd | Financial services | 1994 |
| AGE UK Manchester | Health & social care | 2011 |
| AGE UK Manchester Trading Co. Limited | Financial services | 2009 |
| Agecroft Developments Limited | Construction | 2021 |
| Agecroft Investment Co.Limited | Construction | 1954 |
| Agecroft Investments Ltd | Real estate | 2025 |
| Agecroft Legal Services Limited | Professional & scientific | 2019 |
| Agecroft Masha Limited | Financial services | 2022 |
| Agecroft Pet Supplies Ltd | Wholesale & retail | 2019 |
| Aged & Able Care Services Ltd | Administrative & support | 2026 |
| Agency GMR Limited | Professional & scientific | 2024 |
| Agency of the North Limited | Transport & logistics | 2011 |
| Agency Training Academy Ltd | Professional & scientific | 2025 |
| AGENCY786 Ltd | Information & communication | 2020 |
| Agenda Adapt Limited | Professional & scientific | 2018 |
| Agenda Electrical Limited | Energy | 2010 |
| Agenda Public Relations and Marketing Limited | Administrative & support | 1998 |
| Agent Path Ltd | Professional & scientific | 2021 |
| Agent Software Limited | Information & communication | 2015 |
| Agentic Wellness Ltd | Health & social care | 2024 |
| Agentifyed Ltd | Professional & scientific | 2025 |
| Agentisk Ltd | Professional & scientific | 2026 |
| Agentium Ltd | Information & communication | 2026 |
| Agento Communications Limited | Information & communication | 2019 |
| Agento Limited | Information & communication | 2002 |
| Agents of Distinction Ltd | Real estate | 2023 |
| Agex Ltd | Health & social care | 2024 |