| Airbridge Global Limited | Newcastle Upon Tyne | 2023 |
| Airbrzee Consulting Ltd | Wolverhampton | 2024 |
| Airbtics Ltd | St. Leonards-On-Sea | 2019 |
| Airburo Limited | Bolton | 2015 |
| Airbytes Communications Limited | Rushden | 2022 |
| Airbytes Network Limited | Rushden | 2019 |
| Aircall Communications Limited | Llangollen | 2018 |
| Aircall UK Ltd | London | 2022 |
| Aircards Ltd | Newcastle Upon Tyne | 2020 |
| Aircash INT Limited | London | 2021 |
| Aircast Group Ltd | London | 2021 |
| Aircharge Ltd | Abingdon | 2013 |
| Airchy Limited | London | 2023 |
| Airco Engineering Limited | Sheffield | 1996 |
| Aircom International Limited | Leatherhead | 1995 |
| Aircom Limited | London | 2025 |
| Aircomm Solutions Ltd | Glasgow | 2020 |
| Aircraft Independent Records Limited | Uckfield | 1994 |
| Aircraft IT Security Consultancy & Maintenance Ltd | London | 2019 |
| Aircraft Productions Ltd | Edinburgh | 2025 |
| Aircury Ltd | Poole | 2017 |
| Airdash Ltd | Ballyclare | 2025 |
| Airdat Ltd | Canterbury | 2015 |
| Airdesk Services Limited | Richmond | 2018 |
| Airdesk Technologies Ltd | Trowbridge | 2026 |
| Airdigital Services Limited | Ascot | 2015 |
| Airdrawn Limited | Chippenham | 2024 |
| Airdrawn Works Limited | Chippenham | 2025 |
| Airdrie Citizens Advice Bureau | Airdrie | 1995 |
| Airdrie Telecom Services Ltd. | | 2005 |
| Airdrop Ltd | Didcot | 2011 |
| Airdwil Services Ltd | Whitehills Business Park | 2019 |
| Aire Connections Ltd | Keighley | 2018 |
| Aire Consult Ltd | London | 2025 |
| Aire Consulting Ltd | Bingley | 2025 |
| Aire Global Group Limited | Leeds | 2018 |
| Aire Innovate Limited | Leeds | 2022 |
| Aire Intelligent Technologies Limited | Leeds | 2018 |
| Aire Logic Limited | Leeds | 2007 |
| Aire No-Code Limited | Balerno | 2024 |
| Aire Real Estate Systems Ltd | London | 2023 |
| Aire Valley Computer Solutions Limited | Bingley | 2009 |
| Aire Wharfe DAB Ltd | Halifax | 2023 |
| Aireal Limited | Glasgow | 2025 |
| Aireavu Ltd | London | 2025 |
| Aireborn Digital Ltd | Pudsey | 2022 |
| Airecanna Ltd | Cardiff | 2018 |
| Airecast Limited | Surbiton | 2023 |
| Aireception Ltd | Swindon | 2025 |
| Aired Ltd | Watford | 2017 |
| Airedale Digital Ltd | Preston | 2019 |
| Airedale Software Development Limited | Shipley | 2013 |
| Airefine Ltd | Eastleigh | 2025 |
| Aireka Digital Transformation Ltd | Milton Keynes | 2026 |
| Airekon Ltd | London | 2025 |
| Airemail Holdings Limited | Pinner | 2020 |
| Airemploy Ltd | Leicester | 2021 |
| Airengage Limited | West Drayton | 2016 |
| Airens Group Ltd | Newport | 2026 |
| Aireriver Ltd | London | 2026 |
| Aires Films Limited | Warwick | 2017 |
| Aires Media Limited | Sidmouth | 2015 |
| Aires Publishing Ltd | Sutton | 2021 |
| Airesk Ltd | Swindon | 2026 |
| Airestop Limited | Edinburgh | 2021 |
| Airestream Ltd | Leeds | 2026 |
| Airevalley Solutions Limited | Keighley | 2012 |
| Airevo Consulting Limited | Diss | 2020 |
| Airey Project Services Limited | Darlington | 2022 |
| Airey Tech Consulting Limited | Cardiff, | 2017 |
| Airfi Networks Services Limited | London | 2017 |
| Airfibre Limited | Lisburn | 2014 |
| Airfibre Networks Limited | Craigavon | 2018 |
| Airfibrex Ltd | Liverpool | 2025 |
| Airfield Adventures Ltd | Shamley Green | 2013 |
| Airfieldhub Ltd | London | 2021 |
| Airfields of Britain Conservation Trust | London | 2014 |
| Airfinance Global Limited | London | 2023 |
| Airfinity Limited | London | 2015 |
| Airflair International | Cardiff | 2022 |
| Airfly Tech Limited | Romford | 2017 |
| Airfoillearner Ltd | Manchester | 2026 |
| Airfolio Limited | Belfast | 2021 |
| Airfusion Ventures Ltd | London | 2022 |
| Airfuss Limited | Hull | 2024 |
| Airgap Limited | Manchester | 2006 |
| Airgap Partners Ltd | London | 2019 |
| Airgen IT Limited | Nottingham | 2022 |
| Airglide Media Ltd | London | 2016 |
| Airglow Ltd | Ruislip | 2011 |
| Airgotek Limited | Calne | 2013 |
| Airgsm UK Limited | Edinburgh | 2025 |
| Airguide Digital Ltd | London | 2021 |
| Airguitr Ltd | Sandbach | 2025 |
| Airhead Productions Limited | London | 1998 |
| Airheads Life Limited | Earl Shilton | 2022 |
| AIRHIZ4 Limited | London | 2023 |
| Airhop Labs Limited | London | 2024 |
| Airies AI Ltd | London | 2012 |
| Airin UK Ltd | London | 2025 |