| Acquisition Services Limited | Leicester | 2001 |
| Acquisition Systems EOT Limited | Finchampstead | 2021 |
| Acquisitions Ltd | London | 2017 |
| Acquit Debt Recovery Limited | Poole | 2010 |
| Acquitain Limited | Tunbridge Wells | 2014 |
| Acquittal Ltd | London | 2020 |
| Acquos Ltd | Stockport | 2008 |
| ACR Car Repair Ltd | Wembley | 2016 |
| ACR Cars Ltd | Woodbridge | 2022 |
| ACR Cleaning Limited | St Ives | 2012 |
| ACR Commercial & Finance Ltd | Barnsley | 2017 |
| ACR Consultancy Ltd | London | 2007 |
| ACR Contracts Ltd | Glasgow | 2023 |
| ACR Events Ltd | Ware | 2020 |
| ACR Executive Search Ltd | Brentwood | 2023 |
| ACR Garden Services Limited | Altrincham | 2003 |
| ACR Recruitment & Training Ltd | Helston | 2015 |
| ACR Recruitment Solutions Ltd | Cardiff | 2009 |
| ACR Window Cleaning Limited | St Ives | 2023 |
| Acra Limited | Thatcham | 2010 |
| Acra Payroll Services Ltd | Southend-On-Sea | 2023 |
| Acra Services Ltd | York | 2025 |
| Acraig HR Limited | Pudsey | 2025 |
| Acrales Limited | Southport | 2002 |
| Acraman 514 Limited | Bolton | 2017 |
| Acrane Ltd | Nottingham | 2017 |
| Acre (Holdings) Ltd | Johnstone | 2015 |
| Acre 1144 Limited | Surbiton | 2011 |
| Acre 1162 (Shell T) Limited | Borehamwood | 2013 |
| Acre 117 Limited | Buckhurst Hill | 1997 |
| Acre 1211 Limited | London | 2018 |
| Acre 1212 Limited | London | 2018 |
| Acre 1223 Limited | Bromsgrove | 2020 |
| Acre 744 Limited | London | 2003 |
| Acre Aviation Limited | London | 2017 |
| Acre Building Consultants Ltd | Stanmore | 2012 |
| Acre Business Consultancy Limited | Cannock | 2019 |
| Acre Capital Investments Limited | Harrow | 2019 |
| Acre Consulting Limited | Guildford | 2026 |
| Acre Debt 2 PLC | London | 2020 |
| Acre Debt Holdings Limited | London | 2020 |
| Acre Exterior Cleaning Ltd | Leek | 2024 |
| Acre Heathrow Limited | Harrow | 2012 |
| Acre Hospitality Limited | London | 2026 |
| Acre Jean Ltd | London | 2025 |
| Acre Landscapes Limited | Brighton | 2008 |
| Acre Lawn Turf Limited | Waterlooville | 2017 |
| Acre Marketing Ltd | Macclesfield | 2015 |
| Acre Mercantile Limited | London | 2021 |
| Acre Nominees 2 Limited | London | 1991 |
| Acre Nominees Limited | London | 2005 |
| Acre Property (Holdings) Ltd | Johnstone | 2015 |
| Acre Property Services Ltd. | Johnstone | 2015 |
| Acre Resources Limited | London | 2003 |
| Acre Technical Media Ltd | Warrington | 2025 |
| Acre Transportation Group Limited | Warrington | 2017 |
| Acreage Recruitment Ltd | Norwich | 2019 |
| Acrecoast Limited | West Linton | 2002 |
| Acremount Limited | London | 2025 |
| Acreo Limited | Oldmeldrum | 2003 |
| Acreo Partners Limited | London | 2022 |
| Acres 3 Ltd | Fleet | 2026 |
| Acres 4 Dogs Ltd | Hassocks | 2010 |
| Acres of Fencing Limited | Boston | 2015 |
| Acres Overland Limited | Exmouth | 2021 |
| Acresbrook Investments Limited | Macclesfield | 2020 |
| Acresofspaceproperties Limited | West Drayton | 2025 |
| Acrevale Digital Limited | Cardiff | 2025 |
| Acreview Land Management Ltd | Lancaster | 2026 |
| Acrewind Limited | Aberdeen | 2014 |
| Acrion Consulting Limited | London | 2024 |
| Acrion Global Ltd | London | 2018 |
| Acrismaritei Limited | Birmingham | 2025 |
| Acro Services Ltd | Manchester | 2008 |
| Acro Solutions Ltd | Bristol | 2025 |
| Acrobat Vehicle Rental Limited | Newbury | 1997 |
| Acrocargo Express (UK) Co Limited | Ipswich | 2009 |
| Acrol Air Conditioning Co. Limited | Gateshead | 1976 |
| Acropolis Capital Limited | London | 2011 |
| Acropolis Capital Management Limited | London | 1980 |
| Acropolis DRS Limited | Bedford | 2022 |
| Acropolis Leisure Holdings Limited | London | 2020 |
| Across | South Queensferry | 2003 |
| Across Atlantic Development Ltd | London | 2017 |
| Across Media Limited | Harrow | 2022 |
| Across Safety Development Ltd | Chichester | 2015 |
| Across the Board Consultancy Ltd | Petworth | 2013 |
| Across the Board Limited | Altrincham | 2003 |
| Across the Divide Limited | Axminster | 1996 |
| Across the Pond - Study in Britain Limited | Fleet | 2014 |
| Across the Pond Travel Limited | Coventry | 2024 |
| Acrossriver Garment Limited | Kington | 2013 |
| Acrotrix Global Ltd | Watford | 2025 |
| Acrovision Trustee Company Limited | Dunstable | 2020 |
| Acrow Recruitment Ltd | Stevenage | 2011 |
| Acrow Rental (NI) Ltd | Dungannon | 2012 |
| Acrs Recruitment Limited | Dagenham | 2026 |
| Acrux Solutions Limited | Sutton Coldfield | 2014 |
| Acrylicise Limited | London | 2008 |
| Acryluso UK Limited | London | 2020 |