| Air (UK) Piccadilly Ltd | Hospitality | 2019 |
| Air (UK) Pinks Ltd | Hospitality | 2020 |
| Air (UK) Temple ST Ltd | Hospitality | 2023 |
| Air (UK) Trinity Leeds Ltd | Hospitality | 2020 |
| Air Arena Limited | Arts & recreation | 2015 |
| Air Boba Limited | Hospitality | 2025 |
| Air Cambridge (Lanzarote) Limited | | 1984 |
| Air Conditioning Design EOT Limited | Financial services | 2023 |
| Air Conditioning Design Limited | Construction | 1988 |
| Air Corp Industries Limited | Other services | 2021 |
| Air Energi Group Limited | Professional & scientific | 2005 |
| Air Management & Design Ltd | Manufacturing | 1998 |
| Air Movement Ltd | Professional & scientific | 2020 |
| Air Properties Limited | Real estate | 2019 |
| Air Regent Logistics UK Limited | Extraterritorial | 2022 |
| Air Resources Limited | Administrative & support | 1979 |
| Air Service Events Ltd | Professional & scientific | 2023 |
| Air Services & Systems (Europe) Limited | Construction | 2001 |
| Air Stay Manchester Ltd | Real estate | 2023 |
| Air Street Consultants Ltd | Extraterritorial | 2019 |
| Air Tech Innovate Limited | Transport & logistics | 2021 |
| Air to BE Ltd | Real estate | 2026 |
| Air UK (Atomic) Ltd | Hospitality | 2025 |
| Air UK (JJ) Leeds Ltd | Hospitality | 2026 |
| Air UK (TP) Ltd | Hospitality | 2025 |
| AIR2YACHT Ltd | Professional & scientific | 2024 |
| Aira Group Limited | Wholesale & retail | 2026 |
| Aira Noor Ltd | Wholesale & retail | 2025 |
| Aira Textiles Limited | Wholesale & retail | 2024 |
| Airaglobal Limited | Wholesale & retail | 2025 |
| Airah Designs Limited | Construction | 2020 |
| Airavata 05 Ltd | Real estate | 2026 |
| Airball Ltd | Administrative & support | 2025 |
| Airbase Media Ltd | Professional & scientific | 2007 |
| Airblue (UK) Limited | Transport & logistics | 2016 |
| Airborne Environmental Consultants EOT Limited | Financial services | 2024 |
| Airborne Plaques Ltd | Wholesale & retail | 2012 |
| Airborne UK Parent Limited | Professional & scientific | 2010 |
| Airbrick Finance Ltd | Real estate | 2021 |
| Aircentric Limited | Construction | 2006 |
| Airdrie Properties Limited | Extraterritorial | 2016 |
| Aireden Ltd | Real estate | 2022 |
| Airey Miller Limited | Professional & scientific | 2016 |
| Airey Miller Partnership LLP | | 2008 |
| Airey Miller Surveys Limited | Professional & scientific | 2021 |
| Airflow Measurements Limited | Manufacturing | 1973 |
| Airfoillearner Ltd | Information & communication | 2026 |
| Airgap Limited | Information & communication | 2006 |
| Airginity Programming Limited | Wholesale & retail | 2015 |
| Airhaven Estates Ltd | Professional & scientific | 2010 |
| Airhbe Ltd | Real estate | 2023 |
| Airie Management Company Limited | Households | 2021 |
| Airley Healthcare Limited | Wholesale & retail | 2021 |
| Airmc Ltd | Construction | 2025 |
| Airmont Estates Ltd | Real estate | 2022 |
| Airnova Clothing Limited | Wholesale & retail | 2025 |
| Airplan Flight Equipment Limited | Information & communication | 1973 |
| Airport Advertising Limited | Professional & scientific | 1992 |
| Airport City (Asset Manager) Limited | Financial services | 2013 |
| Airport City (General Partner) Limited | Real estate | 2013 |
| Airport City (Manchester) Investments Limited | Real estate | 2013 |
| Airport City (Manchester) Limited | Professional & scientific | 2013 |
| Airport City Limited Partnership | | 2014 |
| Airport City Management Company (North) Limited | Real estate | 2019 |
| Airport City Management Company (South) Limited | Real estate | 2016 |
| Airport City Property Investments Ltd. | Real estate | 2002 |
| Airport Estates Limited | Financial services | 2003 |
| Airport Operations Limited | Transport & logistics | 2019 |
| Airport Petroleum Limited | Wholesale & retail | 1992 |
| Airport Services and Plant Hire Limited | Construction | 1993 |
| Airport Services International Limited | Other services | 2018 |
| Airport Trips Ltd | Transport & logistics | 2022 |
| Airpure International Limited | Wholesale & retail | 2008 |
| Airpure Trademark Limited | Extraterritorial | 2016 |
| Airrated Ltd | Professional & scientific | 2018 |
| Airservice International Ltd | Administrative & support | 2021 |
| Airshack Developments Ltd | Construction | 2020 |
| Airshack Ltd | Hospitality | 2016 |
| Airshack Projects (Moseley) Limited | Real estate | 2023 |
| Airshack Projects 359 Limited | Construction | 2021 |
| Airshack Projects Ltd | Construction | 2020 |
| Airship Interactive Ltd | Information & communication | 2010 |
| Airsid Ltd | Information & communication | 2025 |
| Airside 1 Ltd | Real estate | 2009 |
| Airsort Ltd | Information & communication | 2026 |
| Airsource Ventilation Limited | Manufacturing | 2010 |
| Airstaybnbuk Limited | Hospitality | 2023 |
| Airsun Power Ltd | Construction | 2024 |
| Airtek Limited | Manufacturing | 2007 |
| Airtight Productions Limited | Information & communication | 2002 |
| Airtime Rewards Limited | Information & communication | 2013 |
| Airuide Ltd | Wholesale & retail | 2025 |
| Airvis Ltd | Professional & scientific | 2015 |
| Airwings Ltd | Wholesale & retail | 2026 |
| Airy Fairy Limited | Hospitality | 2017 |
| AIS MCR Limited | Wholesale & retail | 2014 |
| AIS2CARE Limited | Health & social care | 2018 |
| Aish Global Limited | Wholesale & retail | 2026 |
| Aishamarie Group Ltd | Information & communication | 2014 |
| Aisle to Album Ltd | Professional & scientific | 2026 |