| Air Salvage International Limited | Cirencester | 1997 |
| Air Sea Cargo Limited | London | 2024 |
| Air Sea Forwarding Ltd | Bracknell | 2017 |
| Air Sea Land Ltd | Stourport On Severn | 2020 |
| Air Sea Land Worldwide Ltd | Stockport | 2022 |
| Air Sea Logistics Limited | Reading | 1996 |
| Air Sea Road International Limited | Congleton | 2008 |
| Air Sea Road Shipping & Forwarding Ltd | Congleton | 2010 |
| Air Sea Scotland Limited | Paisley | 1986 |
| Air Sierra Leone Limited | London | 2025 |
| Air Stage X Limited | London | 2026 |
| Air Swiss Ltd | Gloucester | 2017 |
| Air Taxis Ltd | Sheffield | 2014 |
| Air Tech Innovate Limited | Manchester | 2021 |
| Air Terminal Transfer Ltd | Stirling | 2024 |
| Air Tigers Logistic Limited | Uxbridge | 2022 |
| Air Time Parking Ltd | Slough | 2017 |
| Air to Road Limited | Slough | 1996 |
| Air Traffic Management Consultancy Ltd | Leatherhead | 2026 |
| Air Traffic Services Resourcing Solutions Ltd | Cheltenham | 2019 |
| Air Training Club Aviation Limited | Blackpool | 2013 |
| Air Trans Limited | Grays | 2012 |
| Air Transport Management Limited | Ipswich | 1995 |
| Air Transport Scotland Ltd | Kilsyth | 2018 |
| Air UK Engineering Ltd | Dunbar | 2007 |
| Air UK Limited | London | 2000 |
| Air VIP Concierge Limited | London | 2019 |
| Air VIP Concierge Tours Limited | Basildon | 2025 |
| Air VIP Services Limited | Wilmslow | 2025 |
| Air West Limited | East Grinstead | 1987 |
| Air Works Empire UK Limited | Norwich | 2012 |
| Air Works UK Engineering Limited | Norwich | 2009 |
| Air X UK Ltd | Feltham | 2023 |
| Air Xpress Limited | Slough | 2023 |
| Air-Cooled Aviation Services Limited | Clacton-On-Sea | 2021 |
| Air-Locke Ltd | Ilkeston | 2025 |
| Air-Sea Packing Group Limited | Northolt | 1992 |
| Air-Transfer Ltd | London | 2012 |
| Air-Wave Freight Management Ltd | Alcester | 2006 |
| AIR2COUNTRY Limited | London | 2023 |
| AIR2PORT Southampton Limited | Southampton | 2022 |
| AIR2TRANSPORT Limited | London | 2025 |
| AIR89 Ltd | Cil-Y-Coed | 2026 |
| Aira Transport Ltd | Poole | 2026 |
| Airakaz Limited | Birmingham | 2019 |
| Airasia Europe Limited | London | 2020 |
| Airavat Logistic Ltd | London | 2021 |
| Airavat Travel Ltd | Belfast | 2026 |
| Airberry Ltd | Godalming | 2020 |
| Airblades Ltd | London | 2023 |
| Airblue (UK) Limited | Manchester | 2016 |
| Airbookings UK Ltd | Ruislip | 2011 |
| Airborne Classics Limited | Oxfordshire | 2005 |
| Airborne Freight International Ltd | London | 2025 |
| Airborne International Limited | Castle Donington | 2017 |
| Airborne Product Support Limited | London | 1998 |
| Airborne Support Limited | Bedfordshire | 1998 |
| Airbourne Aviation Ltd | Ibthorpe | 2025 |
| Airbox Fulfilment Ltd | Leighton Buzzard | 2017 |
| Airbridge Networks Ltd | Southampton | 2010 |
| Airbus 2000 Limited | Brampton | 2003 |
| Airbus Flight Training Ltd | Shoreham-By-Sea | 2010 |
| Aircabio Limited | Walsall | 2024 |
| Aircabs Ltd | Slough | 2026 |
| Aircare Freight Services Limited | Middx | 1979 |
| Aircargo & Container Services Limited | Luton | 1984 |
| Aircargosolutions Ltd | Wirral | 2025 |
| Aircharter UK Limited | Gatwick | 1998 |
| Aircontact Ltd | London | 2021 |
| Aircordon Ltd | Glasgow | 2022 |
| Aircorp Aviation Limited | Antrim | 2023 |
| Aircraft and Ground Limited | Warwick | 1988 |
| Aircraft Charter Ltd. | Bristol | 2006 |
| Aircraft Chartering Services Limited | Farnborough | 1986 |
| Aircraft Consulting & Engineering II Limited | High Peak | 2021 |
| Aircraft Ground Leasing Solutions Limited | Bridgwater | 2017 |
| Aircraft Hangarage Ltd | Royston | 2020 |
| Aircraft Interiors Limited | Stratford | 1999 |
| Aircraft Leasing and Management Limited | Crawley | 1987 |
| Aircraft Ltd | Brighton | 2021 |
| Aircraft Maintenance Services Ltd | Bletchingley | 2006 |
| Aircraft Restoration Company Limited | Duxford | 2018 |
| Aircraft Services Fife Limited | London | 2025 |
| Aircraft Transport Worldwide UK Ltd | Crawley | 2024 |
| Aircraft Transportation Limited | Southall | 2026 |
| Aircraftservices Ltd | London | 2017 |
| Aircrew Direct.Com Limited | Manchester Airport | 2008 |
| Airdrie Executive Travel Limited | Airdrie | 2026 |
| Airdrie Premier Travel Ltd | Airdrie | 2026 |
| Airdrie Vehicle Movers Ltd | Airdrie | 2011 |
| Aire and Ouse Projects Ltd | Kingston Upon Hull | 2018 |
| Aire Valley Private Hire Ltd | Keighly | 2024 |
| Aire Valley Transport Limited | Bradford | 2013 |
| Aire Valley Travel Ltd | Keighley | 2026 |
| Aire Worth Travel Ltd | Keighley | 2026 |
| Airecovery Ltd | Northampton | 2025 |
| Airedale Taxis Ltd | Keighley | 2020 |
| Aireja Limited | Boston | 2017 |
| Aireng Limited | Saxilby | 2013 |
| Airergo Ltd | Birmingham | 2024 |