| Aegis Riverside Limited | Real estate | 2026 |
| Aegis Security Solutions NW Ltd | Financial services | 2026 |
| Aeight Ltd | Financial services | 2014 |
| AEJ Education Consultancy Ltd | Professional & scientific | 2019 |
| AEK Retail Ltd | Wholesale & retail | 2018 |
| Aemconsultants Ltd | Administrative & support | 2025 |
| Aeolus Energy Ltd | Wholesale & retail | 2009 |
| Aeon Precision Ltd | Manufacturing | 2025 |
| Aeonis Limited | Agriculture & fishing | 2014 |
| Aequalis Management Limited | Professional & scientific | 2022 |
| Aero-Uk Ltd | Professional & scientific | 2022 |
| Aerospace Consulting Ltd | Professional & scientific | 2019 |
| Aerospace Consumables Limited | Professional & scientific | 2011 |
| Aerospace Manufacturing Consultancy Ltd | Professional & scientific | 2013 |
| Aerospace Structures Ltd | Professional & scientific | 2023 |
| AES Connect Limited | Wholesale & retail | 2025 |
| Aesthetic BEE Ltd | Wholesale & retail | 2026 |
| Aesthetic HUT Ltd | Other services | 2026 |
| Aeternum Health Ltd | Administrative & support | 2025 |
| Aether Beauty Limited | Other services | 2026 |
| Aethlos Ltd | Professional & scientific | 2022 |
| AF Asset Management Limited | Administrative & support | 2025 |
| AF Traders MCR Ltd | Real estate | 2022 |
| AFC Fylde Community Foundation | Arts & recreation | 2015 |
| AFC Fylde Ladies Limited | Arts & recreation | 2021 |
| AFC Sherwood Limited | Arts & recreation | 2024 |
| Affinity Design Interiors Ltd | Wholesale & retail | 2023 |
| Affinity Marketing NW Ltd | Other services | 2020 |
| Affinity Network Solutions Limited | Information & communication | 2017 |
| Affordable Home Improvements NW Ltd | Construction | 2025 |
| Affordable Vehicle Solutions Preston Ltd | Wholesale & retail | 2019 |
| Affsa Properties Ltd | Real estate | 2020 |
| Afghan Flame & Grill Ltd | Hospitality | 2025 |
| AFH Engineering Services Ltd | Construction | 2012 |
| AFI Investments Ltd | Administrative & support | 2017 |
| AFM Bookkeeping & Accountancy Limited | Professional & scientific | 2017 |
| AFM Plumbing & Heating Ltd | Construction | 2016 |
| Afos Electrical Ltd | Manufacturing | 2024 |
| Afreen Communication Ltd | Wholesale & retail | 2012 |
| Afri Fresh Limited | Manufacturing | 2024 |
| African Gold Crypto Currency Ltd | Professional & scientific | 2020 |
| African Trails Limited | Administrative & support | 2007 |
| African Village Preston Limited | Hospitality | 2024 |
| Afritimber Ltd | Wholesale & retail | 2014 |
| Afritondo Press Ltd | Information & communication | 2019 |
| Afro Centre Ltd | Wholesale & retail | 2025 |
| Afro&Wears Limited | Wholesale & retail | 2024 |
| AFS 4 U Ltd | Financial services | 2021 |
| AFS GEN Property Ltd | Real estate | 2025 |
| AFS Matrix Ltd | Wholesale & retail | 2026 |
| AFT Media Limited | Information & communication | 2023 |
| After School Edventures Ltd | Education | 2024 |
| Afterathena Limited | Professional & scientific | 2004 |
| AFY Pharma Ltd | Health & social care | 2020 |
| AG & Plant Northwest Ltd | Wholesale & retail | 2008 |
| AG Acheson Ltd | Health & social care | 2017 |
| AG Dental Ltd | Health & social care | 2025 |
| AG Developments Limited | Real estate | 2017 |
| AG Paving and Landscaping Ltd | Administrative & support | 2021 |
| AG Payment Ltd | Information & communication | 2023 |
| Ag&El Services Ltd | Education | 2021 |
| AGA Medical Services (UK) Limited | Health & social care | 2013 |
| Agana Logistics and Franchising Ltd | Transport & logistics | 2026 |
| Agate Property Solutions Limited | Real estate | 2023 |
| AGC Consultants Ltd | Professional & scientific | 2024 |
| AGC Investments Limited | Professional & scientific | 2007 |
| AGC Joinery Limited | Construction | 2015 |
| AGF Law Services Limited | Administrative & support | 2006 |
| Agile Accountancy Services Limited | Professional & scientific | 2019 |
| Agile Business Improvement Limited | Professional & scientific | 2014 |
| Agile Digital Systems Limited | Information & communication | 2015 |
| Agile Group Systems & Services Limited | Information & communication | 2014 |
| Agile Systems USA Ltd | Information & communication | 2022 |
| Agilewise Limited | Information & communication | 2022 |
| Agility Resourcing Ltd | Administrative & support | 2009 |
| Aglc Ltd | Administrative & support | 2019 |
| AGM Education Limited | Education | 2016 |
| Agml Technical Limited | Professional & scientific | 2021 |
| AGR RTM Company Limited | Households | 2021 |
| Agriop Limited | Agriculture & fishing | 2019 |
| Agrisol Services Limited | Agriculture & fishing | 2005 |
| Agritec Farms Ltd | Agriculture & fishing | 2020 |
| Agritec International Ltd | Manufacturing | 2003 |
| Agrum Ltd | Wholesale & retail | 2024 |
| AGS Finance Limited | Other services | 2019 |
| AGS North West Limited | Agriculture & fishing | 2015 |
| AGS Therapy Ltd | Health & social care | 2025 |
| Agsc Ltd | Professional & scientific | 2012 |
| Agscope Limited | Professional & scientific | 2006 |
| Agss Academy Ltd | Information & communication | 2025 |
| AGT Computer Services Limited | Information & communication | 2008 |
| AH 1 Holdings Limited | Education | 2025 |
| AH 2 Holdings Limited | Education | 2025 |
| AH Educate Ltd | Wholesale & retail | 2020 |
| AH NW Ltd | Wholesale & retail | 2025 |
| AHG Plant Hire Limited | Administrative & support | 2025 |
| Ahirwal Staffing Limited | Administrative & support | 2025 |
| Ahjb Properties Ltd | Real estate | 2024 |
| AHM City Walk Limited | Real estate | 2024 |
| Ahmadzai Ltd | Other services | 2019 |