| Aerospace Cutting Tool Limited | London | 2009 |
| Aerospace Engineering Systems Ltd | London | 2017 |
| Aerospace Engineering Tooling & Defence Ltd | Bolton | 2025 |
| Aerospace Global Trade Ltd | London | 2023 |
| Aerospace Industry.Com Ltd | Bristol | 2014 |
| Aerospace International Ltd | Canterbury | 2025 |
| Aerospace KMF Limited | Bristol | 2025 |
| Aerospace Ltd | Sheffield | 2020 |
| Aerospace Maintenance Advisors Ltd | Sevenoaks | 2026 |
| Aerospace Manufacturing Limited | Saffron Walden | 2018 |
| Aerospace Marine Limited | Newcastle Under Lyme | 2020 |
| Aerospace Metal Finishers Limited | Ballymena | 2002 |
| Aerospace Metrology & Electromechanical Calibration Limited | Newcastle Upon Tyne | 2004 |
| Aerospace Military & Commercial Limited | Camberley | 2009 |
| Aerospace Tooling Corporation Limited | Dartford | 2013 |
| Aerospace Tooling Limited | Dartford | 2007 |
| Aerospana Ltd | Shrewsbury | 2025 |
| Aerospark Limited | Cardiff | 2025 |
| Aerospike Games Ltd | Bristol | 2025 |
| Aerospin Global Ltd | London | 2024 |
| Aerosstech Ltd | Southampton | 2025 |
| Aerostate Ltd | London | 2025 |
| Aerostem Limited | Yeovil | 2026 |
| Aerostrike Ltd | Saffron Walden | 2024 |
| Aerostrike Vehicles Limited | Harrow | 2024 |
| Aerosubs Limited | Ballymena | 1996 |
| Aerosure Ltd | Steyning | 2013 |
| Aerosys Engineering Ltd | London | 2018 |
| Aerotation Design Services Limited | Hunstanton | 1998 |
| Aerotec Global Limited | Leyland | 2025 |
| Aerotech (Suffolk) Limited | Ipswich | 2017 |
| Aerotech Aircraft Maintenance Limited | Coventry | 1997 |
| Aerotech Aircraft Services Ltd | Southend-On-Sea | 2026 |
| Aerotech Airfield Lighting Ltd | London | 2022 |
| Aerotech Aviation Services Ltd | Gateshead | 2026 |
| Aerotech International UK Ltd | Croydon | 2025 |
| Aerotech MIG Ltd | Cambridge | 2025 |
| Aerotech Solutions Ltd | Sittingbourne | 2007 |
| Aerotech South West Ltd | Warrington | 2014 |
| Aerotech, Limited | Reading | 1981 |
| AEROTECH-33 Ltd | London | 2026 |
| AEROTECH2000 Limited | Brecon | 2025 |
| Aerotegrity Ltd | Manchester | 2024 |
| Aerotek Aviation Engineering Limited | Ilford Essex | 1994 |
| Aerotek Services UK Limited | Holyhead | 2023 |
| Aerotherm Limited | Watlington | 2023 |
| Aerothermal Limited | Milton Keynes | 2006 |
| Aerotiques Ltd | Gloucester | 2017 |
| Aerotocha Ltd | Cambridge | 2024 |
| Aerotool Ltd | Manchester | 2017 |
| Aerotool Services Ltd | Bootle | 2005 |
| Aerotosphere Limited | Bury St. Edmunds | 2026 |
| Aerotron Composites Limited | Crawley | 2019 |
| Aerotv Limited | West Malling | 2004 |
| Aerotyne IND Ltd | Ashford | 2020 |
| Aerotyne International Limited | London | 2024 |
| Aerovac Keighley Ltd | London | 1980 |
| Aerovive Ltd | Hastings | 2026 |
| Aerovolve Engineering Ltd | Maidstone | 2024 |
| Aerowind Limited | Hamilton | 2025 |
| Aerox Mechtech Ltd | Harrow | 2025 |
| Aeroxcraft Ltd | Burnley | 2011 |
| Aerroid Ltd | Belfast | 2018 |
| Aersentry Ltd | London | 2026 |
| Aersoft Aviation Solutions Limited | Porthcawl | 2025 |
| Aerstream Limited | Cullompton | 2023 |
| Aerulle Aviation Limited | Birmingham | 2020 |
| Aerzen Machines Limited | Essex | 1973 |
| AES (Scotland) Limited | Cupar | 2003 |
| AES Aero Ltd | Marton | 2022 |
| AES Environmental JV Ltd | Newcastle Upon Tyne | 2023 |
| AES Limited | Forres | 1983 |
| AES Maintenance Services Limited | Buckingham | 2007 |
| AES Support Services Limited | Northampton | 2009 |
| AES [Equipment Cleaning] Limited | Ayr | 2009 |
| Aesc UK Plant 1 Limited | Sunderland | 2017 |
| Aesc UK Plant 2 Holding Limited | Sunderland | 2024 |
| Aesc UK Plant 2 Limited | Sunderland | 2022 |
| Aesc Workshops Ltd | Falmouth | 2026 |
| Aesica Queenborough Limited | Cheadle | 2007 |
| Aesin Limited | Deeside | 2020 |
| Aesir Aerospace Ltd | London | 2025 |
| Aesir Ltd | Wisbech | 2009 |
| Aesm Limited | Dalbeattie | 2023 |
| Aesscentials Global Limited | Macclesfield | 2025 |
| Aesseal (MCK) Ltd. | | 1984 |
| Aesseal Ireland Ltd | | 2007 |
| Aesseal Marine PLC | Rotherham | 2005 |
| Aesseal PLC | Mill Close Rotherham | 1987 |
| Aessent Technology Ltd | South Queensferry | 2009 |
| Aesthete Coffee Roasters Limited | Livingston | 2023 |
| Aesthetic Dental Laboratory Limited | Bristol | 2010 |
| Aesthetic Digital Dental LAB Ltd | Bolton | 2024 |
| Aesthetic Essence Co Ltd | Bolton | 2026 |
| Aesthetic Innovation Limited | Bagshot | 2023 |
| Aesthetic Leather Design Limited | Letchworth Garden City | 2013 |
| Aesthetic Medical Supplies Limited | Doncaster | 2020 |
| Aesthetic Multiconcept Limited | Manchester | 2020 |
| Aesthetic Technology Ltd | Warrington | 2012 |
| Aesthetic World Laboratory Limited | London | 2001 |