| AG Group International Ltd | Professional & scientific | 2025 |
| AG Housing Solutions Ltd | Administrative & support | 2019 |
| AG Property Leeds Limited | Real estate | 2023 |
| AG Removal Services Ltd | Water & waste | 2026 |
| AG Renovations Leeds Limited | Construction | 2024 |
| AG Supermarkets Ltd | Wholesale & retail | 2025 |
| AG Transport (Leeds) Ltd | Transport & logistics | 2026 |
| AG. Llamedos Ltd | Construction | 2025 |
| AG5 Properties Limited | Construction | 2014 |
| Agaaz Ltd | Health & social care | 2025 |
| Agah Market Ltd | Wholesale & retail | 2026 |
| Against the Grain Bar (Leeds) Ltd | Hospitality | 2022 |
| Against the Grain Bar (Yeadon) Ltd | Hospitality | 2024 |
| Agapi Service Limited | Transport & logistics | 2025 |
| Agavinvestments Ltd | Real estate | 2024 |
| AGB Hvac Limited | Construction | 2022 |
| AGB Services(Leeds) Ltd | Other services | 2005 |
| AGC Consultancy Ltd | Professional & scientific | 2011 |
| AGC London Ltd | Administrative & support | 2018 |
| AGC Technologies Ltd | Information & communication | 2025 |
| AGE Assist Limited | Financial services | 2012 |
| AGE Lifetime Limited | Financial services | 2015 |
| AGE Partnership Group Limited | Financial services | 2014 |
| AGE Partnership Limited | Financial services | 2004 |
| AGE Partnership Wealth Management Limited | Financial services | 2014 |
| AGE UK Leeds | Health & social care | 1975 |
| Agency Leeds Ltd | Information & communication | 2019 |
| Agency Oakroyd Limited | Administrative & support | 2022 |
| Agency PB Limited | Real estate | 1998 |
| Agency Springboard Limited | Professional & scientific | 2023 |
| AGENCY7 Ltd | Professional & scientific | 2024 |
| Agenda Management Services Limited | Administrative & support | 2003 |
| Agenda Property Services Limited | Real estate | 2017 |
| Agenda World Ltd | Wholesale & retail | 2025 |
| AGENDA21 Limited | Real estate | 2017 |
| Agensico Ltd | Professional & scientific | 2025 |
| Agent & Kaye Limited | Professional & scientific | 2018 |
| Agent Circuits Ltd | Information & communication | 2026 |
| Agentic Engineering Ltd | Information & communication | 2024 |
| Ages AGO Limited | Hospitality | 2022 |
| AGF Programme Management Limited | Information & communication | 2014 |
| Agform Limited | Manufacturing | 2000 |
| Aggreglass Technology Limited | Water & waste | 2017 |
| Agha Mini Market Ltd | Wholesale & retail | 2025 |
| Aghaji Ltd | Wholesale & retail | 2023 |
| Aghinagh Limited | Administrative & support | 2016 |
| Aghoco 1419 Limited | Financial services | 2016 |
| Agile and Lean Promoters Ltd | Information & communication | 2021 |
| Agile Coders Ltd | Information & communication | 2017 |
| Agile Educational Psychology Ltd | Education | 2016 |
| Agile Evolution Ltd | Information & communication | 2014 |
| Agile Independent Financial Advice Ltd | Professional & scientific | 2016 |
| Agile IT & Software Limited | Information & communication | 2016 |
| Agile M&E Limited | Construction | 2026 |
| Agile SOS Ltd | Information & communication | 2021 |
| Agilend Ltd | Information & communication | 2022 |
| Agilevo Limited | Information & communication | 2016 |
| Agje Ltd | Administrative & support | 2024 |
| AGL Radiology Ltd | Health & social care | 2025 |
| Agla Safety & Business Services Limited | Health & social care | 2025 |
| AGO Actum Ltd | Information & communication | 2015 |
| Agora Kitchen Ltd | Hospitality | 2025 |
| Agora Training Services Ltd | Professional & scientific | 2014 |
| AGR Mechanic Ltd | Manufacturing | 2023 |
| Agrawal & Agrawal Ltd | Health & social care | 2015 |
| Agrawal & Sons Ltd | Real estate | 2025 |
| Agricultural Management Consultancy Ltd | Professional & scientific | 2026 |
| Agriflex Ltd. | Wholesale & retail | 2003 |
| Agriserve (Leeds) Ltd | Agriculture & fishing | 2017 |
| Agro Invest International Holdings Limited | Financial services | 2021 |
| AGS Airports Group Holdings Limited | Administrative & support | 2024 |
| AGS Airports Holdings Limited | Professional & scientific | 2014 |
| AGS Airports Investments Limited | Professional & scientific | 2014 |
| AGS Airports Limited | Professional & scientific | 2014 |
| AGS Airports Pension Trustee Limited | Financial services | 2014 |
| Agua Industrial Ltd | Water & waste | 2024 |
| Aguero Global Ltd | Wholesale & retail | 2021 |
| Aguk Bathrooms Ltd | Construction | 2025 |
| Agus International Ltd | Transport & logistics | 2024 |
| Agworldwide Ltd | Wholesale & retail | 2019 |
| AH Capital Limited | Transport & logistics | 2026 |
| AH Connect Ltd | Professional & scientific | 2018 |
| AH Elland Development Ltd | Construction | 2025 |
| AH Engraving Limited | Wholesale & retail | 2025 |
| AH Enterprises Leeds Ltd | Wholesale & retail | 2023 |
| AH Group Holdings Ltd | Financial services | 2024 |
| AH Investments & Holdings Ltd | Administrative & support | 2021 |
| AH Investments Yorkshire Ltd | Real estate | 2021 |
| AH Joinery and Sons Ltd | Construction | 2025 |
| AH Mobile Tyre Fitting 24/7 Ltd | Wholesale & retail | 2026 |
| AH Média Management Limited | Professional & scientific | 2024 |
| AH Noodle Ltd | Hospitality | 2026 |
| AH Property Partners Limited | Real estate | 2025 |
| AH Reporting Limited | Health & social care | 2019 |
| AH Wholesale Yorkshire Ltd | Wholesale & retail | 2024 |
| AHA Builders Ltd | Manufacturing | 2023 |
| Ahae Ltd | Real estate | 2025 |
| Ahazeej Al-Marefa Ltd | Education | 2023 |
| AHB Developments Ltd | Real estate | 2023 |
| Ahead Partnership (Holdings) Limited | Professional & scientific | 2012 |