| Aikedo Ltd | Administrative & support | 2020 |
| Air Cubed Limited | Extraterritorial | 2019 |
| Aire Valley Surfacing Limited | Construction | 2006 |
| Aire & Worth Valley Training Services Limited | Education | 2023 |
| Aire Connections Ltd | Information & communication | 2018 |
| Aire Valley Accountancy Services Limited | Professional & scientific | 2013 |
| Aire Valley Active Children CIC | Education | 2021 |
| Aire Valley Architects Ltd | Professional & scientific | 2010 |
| Aire Valley Architectural (Aluminium) Ltd | Manufacturing | 1994 |
| Aire Valley Autopaint Ltd | Wholesale & retail | 2011 |
| Aire Valley Decorating Centre Ltd | Wholesale & retail | 2007 |
| Aire Valley Estates Limited | Real estate | 2014 |
| Aire Valley Foods Limited | Wholesale & retail | 2024 |
| Aire Valley Frozen Foods Limited | Wholesale & retail | 2006 |
| Aire Valley Glass Limited | Construction | 2000 |
| Aire Valley GRC LLP | | 2006 |
| Aire Valley Guitars Limited | Wholesale & retail | 2007 |
| Aire Valley Gymnastics Limited | Arts & recreation | 2015 |
| Aire Valley Logs, Tree Surgery & Landscapers Limited | Agriculture & fishing | 2023 |
| Aire Valley Martial Arts Projects CIC | Education | 2025 |
| Aire Valley Metal Limited | Manufacturing | 2011 |
| Aire Valley Plant Repairs Ltd | Manufacturing | 2020 |
| Aire Valley Professional Solutions Ltd | Professional & scientific | 2026 |
| Aire Valley Property Services Ltd | Extraterritorial | 2024 |
| Aire Valley Surfacing Yorkshire Limited | Construction | 2023 |
| Aire Valley Tradeforce Limited | Real estate | 1989 |
| Aire Valley Travel Ltd | Transport & logistics | 2026 |
| Aire Valley Urban Developments Ltd | Real estate | 2025 |
| Aire Worth Travel Ltd | Transport & logistics | 2026 |
| Airedale Accountancy Services Limited | Professional & scientific | 2020 |
| Airedale Animals Limited | Professional & scientific | 2008 |
| Airedale Automotive Limited | Wholesale & retail | 2025 |
| Airedale Bathrooms Ltd | Wholesale & retail | 2024 |
| Airedale Brush Company Ltd | Wholesale & retail | 2025 |
| Airedale Ceramics Limited | Manufacturing | 2013 |
| Airedale Enterprise Services | Administrative & support | 2001 |
| Airedale Escalator Holdings Limited | Financial services | 2019 |
| Airedale Escalator Services Limited | Construction | 2013 |
| Airedale Finance Ltd | Financial services | 2022 |
| Airedale Financial Services Ltd. | Extraterritorial | 2009 |
| Airedale GAS Services Limited | Other services | 2017 |
| Airedale Holdings Ltd | Real estate | 2017 |
| Airedale Homes Project | Health & social care | 1991 |
| Airedale Industrial Limited | Wholesale & retail | 2005 |
| Airedale Lettings Limited | Real estate | 2020 |
| Airedale Lift Services Limited | Construction | 2018 |
| Airedale Pest Control Limited | Administrative & support | 2002 |
| Airedale Physiotherapy Clinic Limited | Health & social care | 2009 |
| Airedale Property Lettings Limited | Real estate | 2024 |
| Airedale Security Ltd | Administrative & support | 2024 |
| Airedale Springs Limited | Manufacturing | 1945 |
| Airedale Taxis Ltd | Transport & logistics | 2020 |
| Airedale Vehicle Services Limited | Construction | 1995 |
| Aireside Carpets Limited | Wholesale & retail | 2024 |
| Aireside Taxis Ltd | Transport & logistics | 2026 |
| Aireside Works Ltd | Construction | 2021 |
| Airevalley Catering Equipments Limited | Wholesale & retail | 2024 |
| Airevalley Kitchens & Bathrooms Ltd | Extraterritorial | 2010 |
| Airevalley Solutions Limited | Information & communication | 2012 |
| Aireville Laboratories Ltd | Professional & scientific | 2020 |
| Aireworth Food Store Ltd | Wholesale & retail | 2024 |
| Aireworth Housing Limited | Real estate | 2023 |
| Aireworth Motor Services Limited | Wholesale & retail | 2025 |
| Aireworth Property Limited | Real estate | 2017 |
| Aireworth Property Services Limited | Real estate | 2018 |
| Aireworth Property Trading Ltd | Real estate | 2022 |
| Airobreezy Limited | Wholesale & retail | 2026 |
| Airville Limited | Construction | 2011 |
| Aiyla Holdings Limited | Real estate | 2024 |
| AJ Clarke Accounting Ltd | Professional & scientific | 2012 |
| AJ Dsci Consulting Ltd | Information & communication | 2024 |
| Aj's World Limited | Hospitality | 2026 |
| AJ6 Sports Ltd | Manufacturing | 2022 |
| AJ786 Solutions Ltd | Information & communication | 2026 |
| AJB Wellness Ltd | Other services | 2021 |
| Ajeeo Ltd | Information & communication | 2015 |
| AJH Properties Ltd | Real estate | 2022 |
| AJP Research Limited | Professional & scientific | 2023 |
| AJT Cutting Equipment Specialists Limited | Professional & scientific | 2023 |
| AJW Electrical Contractors Ltd | Manufacturing | 2019 |
| AK Barbars Limited | Other services | 2023 |
| AK1 Consulting Limited | Professional & scientific | 2018 |
| AK37 Consultancy Services Ltd | Real estate | 2017 |
| AK381TRADERS Limited | Wholesale & retail | 2026 |
| AKA Solutions Ltd | Professional & scientific | 2018 |
| Akbar Management Services Ltd | Professional & scientific | 2025 |
| Akbars Bolton Limited | Hospitality | 2023 |
| Akbars Management Services Ltd | Professional & scientific | 2025 |
| Akedantho Ltd | Wholesale & retail | 2025 |
| Aklema Property Ltd | Real estate | 2024 |
| AKS Boutiquex Limited | Wholesale & retail | 2025 |
| AL Noor Academy Ltd | Education | 2025 |
| Alan Dixon Plumbing & Heating Ltd | Construction | 2016 |
| Alan J Gibson Ltd | Transport & logistics | 2017 |
| Alarp Risk Management Limited | Professional & scientific | 2018 |
| Alashrafs Ltd | Information & communication | 2019 |
| Albermill Limited | Construction | 2003 |
| Albones and Combs Limited | Other services | 2020 |
| Alchemist Workshop Limited | Administrative & support | 2020 |
| Alder Cabin Ltd | Agriculture & fishing | 2024 |