| Airboat Ltd | London | 2026 |
| Aircuisine UK Limited | Peterbourogh | 2020 |
| Aird Catering Ltd | Alness | 2023 |
| Aird's Hotel Ltd | Stirling | 2022 |
| Airdenair Hotel Limited | Edinburgh | 2017 |
| Airdrie Curry House Ltd | Leeds | 2023 |
| Airdrie Kebab Limited | Glasgow | 2020 |
| Airdrie Tandoori Ltd | Glasgow | 2023 |
| Aire Mills Bakery Ltd | Leeds | 2022 |
| Aire Nights Ltd | London | 2024 |
| Aire Rentals Ltd | Nottingham | 2026 |
| Aire&Co Ltd | Irvine | 2021 |
| Airedale Park Estate Limited | Bradford | 2024 |
| Aireen Management Limited | Ventnor | 2025 |
| Airely Limited | London | 2024 |
| Aires Eatery Limited | Crewe | 2025 |
| Aireville Terrace Flat Management Company Limited | Ilkley | 1998 |
| Airfoods Limited | Rotherham | 2022 |
| Airhgt Ltd | Harrogate | 2023 |
| Airhomestay Ltd | Kington | 2024 |
| Airhost London Ltd | London | 2023 |
| Airhosts Ltd | London | 2026 |
| Airlie Arms & Sons Ltd | Dundee | 2024 |
| Airlie Arms Hotel Limited | Kirriemuir | 2017 |
| Airlie Lane Property Company Limited | Winchester | 1997 |
| Airlie Leisure Limited | Consett | 2022 |
| Airlie Street Investments Limited | Dundee | 2012 |
| Airlie Street Properties Limited | Dundee | 2013 |
| Airline Cafe (Excel) Limited | London | 2019 |
| Airline Cafe and Diner Limited | London | 2012 |
| Airlink Hotel & Banqueting Suite Ltd | Hayes | 2013 |
| Airmail London Limited | London | 2016 |
| Airmanage ME Limited | Waterlooville | 2020 |
| Airmid Group Ltd | Oxted | 2026 |
| Airmid Supported Living Ltd | Oxted | 2026 |
| Airnorfolk Ltd | Norwich | 2019 |
| Airoluxeretreats Ltd | London | 2025 |
| Airparks Ltd | London | 2026 |
| Airplay Entertainment Limited | London | 2021 |
| Airport Cafe Ltd | Hounslow | 2023 |
| Airport Catering Ltd | Eniskillen | 2025 |
| Airport Guest House Limited | | 2001 |
| Airport Lodge Ltd | Solihull | 2025 |
| Airport Retail Enterprises (UK) Ltd | London | 2013 |
| Airport Road Cafe Ltd | Crumlin | 2014 |
| Airport Tavern Limited | Bristol | 2010 |
| Airr Limited | Chesham | 2022 |
| Airrooms London Ltd | London | 2018 |
| Airs Thai Kitchen Ltd | Billericay | 2025 |
| Airshack Ltd | Manchester | 2016 |
| Airstaybnbuk Limited | Manchester | 2023 |
| Airstream Catering Ltd | Evesham | 2019 |
| Airstream Catering Services Ltd | Bromley | 2026 |
| Airstream Events Ltd | Doncaster | 2023 |
| Airstream Line Events Limited | Bristol | 2016 |
| Airstream Odyssey Limited | Kilmarnock | 2026 |
| Airstream TDH Ltd | Stevenage | 2021 |
| Airstreamly Retro Ltd | Durham | 2019 |
| Airth Castle Limited | Falkirk | 2004 |
| Airth Caterers Ltd | Falkirk | 2018 |
| Airth Welfare Hall Limited | Glasgow | 2011 |
| Airtickets.Nz - Flight and Hotel Reservation Ltd | London | 2024 |
| Airtree Limited | London | 2012 |
| Airtree Trading Limited | London | 2020 |
| Airy Fairy Limited | Manchester | 2017 |
| Airzone Events Limited | Fareham | 1999 |
| Aisha Adil Limited | Belfast | 2022 |
| Aisha Catering Ltd | Leeds | 2022 |
| Aisha Fast Food Limited | Cheadle | 2026 |
| Aisha Food & Beverage 7 Limited | London | 2023 |
| Aisha Halal Foods Ltd | Southall | 2024 |
| Aisha Imran Ltd | Newcastle Upon Tyne | 2025 |
| Aisha PVT Limited | Belfast | 2019 |
| Aisha Sangar Ltd | Southampton | 2026 |
| Aisha Spice Ltd | High Wycombe | 2022 |
| Aisha Sukaina Food Limited | London | 2026 |
| Aisha Village Limited | Hinckley | 2019 |
| Aisha's Cafe Limited | Leeds | 2020 |
| Aisha's Catering Ltd | Woodbridge | 2026 |
| Aisha's Fusion Kitchen Ltd | London | 2026 |
| Aisha's Kitchen Ltd | Southall | 2024 |
| Aisha's Pakwan Limited | Barking | 2021 |
| Aishaan Ltd | Gravesend | 2022 |
| Aishell Ltd | Barnet | 2023 |
| Aishwarya Limited | Cardiff | 2017 |
| Aislaby OWL House Limited | Pickering | 2020 |
| Aisle&After Events Ltd | Birmingham | 2025 |
| Aislings Kitchen Limited | Isle Of Tiree | 2021 |
| Aisosa Osasogie Global Ventures Ltd | Northampton | 2024 |
| Aisri Delights Ltd | Harrow | 2025 |
| Aisseford Tea Room Ltd | Bakewell | 2011 |
| Aitch & P Limited | Oxford | 2007 |
| Aitchison & Jones Limited | Kinross | 2006 |
| Aitchison Homes From Home Ltd | Glasgow | 2025 |
| Aitken & Daughters Limited | Doncaster | 2019 |
| Aitken Ventures Limited | Prestwick | 2026 |
| Aito Limited | London | 2025 |
| Aitsan Limited | London | 2015 |
| Aitthiporn Ltd | Kington | 2020 |
| Aivish Group Ltd | Cardiff | 2026 |