| Autodice Ltd | Cardiff | 2016 |
| Autodoor Projects UK Ltd | Wishaw | 2012 |
| Autodrive Repairs Limited | | 2003 |
| Autodromo Limited | Bristol | 2002 |
| Autoearth Ltd | London | 2025 |
| Autoeco Limited | London | 2020 |
| Autoelectro Limited | Bradford | 1993 |
| Autoems Injection Specialist Ltd | Grangemouth | 2025 |
| Autoems Limited | Falkirk | 2018 |
| Autoeurope (UK) Ltd | Reigate | 2015 |
| Autofabrica Limited | Southend-On-Sea | 2011 |
| Autofix Bedford Ltd | Bedford | 2016 |
| Autofix Expert Repairs Ltd | Thornton Heath | 2019 |
| Autofix Kris Ltd | Coventry | 2015 |
| Autoflame Engineering Limited | Biggin Hill | 1972 |
| Autoflo Hand Wash Systems Ltd | Worcester | 2009 |
| Autofluids Limited | Swansea | 2020 |
| Autofluidz Limited | Swansea | 2020 |
| Autofour Precision Engineering Limited | Cheltenham | 1985 |
| Autofresh Direct Ltd | Middleton | 2006 |
| Autofy Group Ltd | Bradford | 2025 |
| Autogard (U.K.) Limited | West Midlands | 1982 |
| Autogate Services and Installation Ltd. | Royston | 2000 |
| Autogen Manufacturing Ltd | Coalisland | 2006 |
| Autograph Art T/A Swatch IT Ltd | Ashton-Under-Lyne | 2019 |
| Autoguide Equipment Ltd | Nr Calne | 1989 |
| Autogyn Ltd | Derby | 2019 |
| Autogyro Certification Ltd | Bishops Castle | 2005 |
| Autogyro UK Ltd | Bishops Castle | 2018 |
| Autohaem Ltd | Cambridge | 2023 |
| Autohead Recon Ltd | Inverness | 2007 |
| Autokeys Glasgow Ltd | Glasgow | 2024 |
| Autokins Industrial Co., Ltd. | Stafford, | 2024 |
| Autokontrol Limited | Bolton | 2000 |
| Autokool Central Ltd | Dollar | 2012 |
| Autolab Solutions Ltd | Uxbridge | 2024 |
| Autolam UK Ltd | Sheffield | 2020 |
| Autolectric Services (Hull) Limited | Hull | 2004 |
| Autolift Limited | Coventry | 1999 |
| Autolift U.K. Ltd | Tamworth | 2025 |
| Autolink Service Centre Limited | Wolverhampton | 2013 |
| Autolocks Kent Ltd | Dartford | 2008 |
| Autolockstar Limited | Gourock | 2016 |
| Autolube Limited | Letchworth | 1992 |
| Autolund Ltd | Rugby | 2024 |
| Autolus Holdings (UK) Limited | London | 2018 |
| Autolus Limited | London | 2014 |
| Autolux Limited | Yeadon | 1980 |
| Automac (UK) Limited | Winsford | 1996 |
| Automait Ltd | Wirral | 2026 |
| Automarine (UK) Limited | Poole | 1998 |
| Automarx Limited | Cardiff | 2014 |
| Automate and Control Ltd | London | 2019 |
| Automate Electrical Ltd | Milton Keynes | 2019 |
| Automate Improve Ltd | St Neots | 2021 |
| Automate My Gates Ltd | Newcastle Upon Tyne | 2019 |
| Automated Access Control Ltd | Carluke | 2013 |
| Automated Chilling and Freezing Limited | Newmarket | 2015 |
| Automated Control Services Ltd | Portsmouth | 1998 |
| Automated Controls (UK) Limited | Maidstone | 1993 |
| Automated Cutting Room Services Limited | Whitchurch | 1997 |
| Automated Cutting Solutions Limited | Fareham | 1988 |
| Automated Doors & Gates Ltd | Ipswich | 2006 |
| Automated Engineering Solutions Limited | Glasgow | 2024 |
| Automated Entrance Systems UK Ltd | Manchester | 2020 |
| Automated Environmental Systems (South) Limited | Ashford | 2007 |
| Automated Garage Doors and Gates Limited | Norwich | 1990 |
| Automated Gate Fabrications Ltd | Barnsley | 2020 |
| Automated Industrial Machine Engineering Ltd | Gourock | 2017 |
| Automated Industrial Robotics Wakefield Limited | Wakefield | 1983 |
| Automated Installation Solutions Limited | Hemel Hempstead | 2018 |
| Automated Installations Limited | Frodsham | 2007 |
| Automated Machinery Services Ltd | Hereford | 2020 |
| Automated Managed Services Ltd | Grantham | 2014 |
| Automated Operation Services Ltd | Gloucester | 2022 |
| Automated Packaging Systems Limited | Malvern | 1983 |
| Automated Paint Technologies Ltd | Milton Keynes | 2019 |
| Automated Precision Manufacturing Ltd | Great Yarmouth | 2022 |
| Automated Process & Control Mfng. Co. Limited | Kingston Upon Thames | 1967 |
| Automated Process Control Systems Ltd | Buxton | 2005 |
| Automated Tube Cutting Services Limited | Birmingham | 1979 |
| Automated Vision Ltd | London | 2015 |
| Automated Voting and Electronic Systems Ltd | Manchester | 2023 |
| Automated Water & Effluent Limited | Beaconside | 1982 |
| Automated Wire Bending Limited | Peterborough | 1992 |
| Automated Works Limited | Mansfield | 2021 |
| Automatedtechnologies Ltd | High Peak | 2010 |
| Automatic Access Limited | Bridgnorth | 2004 |
| Automatic Alarms Limited | Bolton | 1985 |
| Automatic Control Systems (Scotland) Ltd. | East Kilbride | 1997 |
| Automatic Door Components Ltd | Glasgow | 2007 |
| Automatic Door Solutions Ltd | Walsall | 2025 |
| Automatic Entrance Ltd | Cinderford | 2023 |
| Automatic Entrance Systems Limited | Kingsthorpe | 2000 |
| Automatic Flare Systems Limited | Coventry | 1996 |
| Automatic Gate Services Ltd | London | 2026 |
| Automatic Gates & Barriers (Midlands) Ltd | Birmingham | 2013 |
| Automatic Industrial Machines Limited | Clevedon | 1969 |
| Automatic Power Ltd | Hampton | 2002 |
| Automatic Precision Turning (Leicester) Limited | Ashby De La Zouch | 1970 |