| Acemind Limited | London | 2009 |
| Acenica Resource UK Limited | London | 2020 |
| Acenote Ltd | Wolverhampton | 1995 |
| Acent Healthcare Services Ltd | London | 2020 |
| Acentra Contracting Ltd | Jarrow | 2024 |
| Acentra Trading Limited | Tyne And Wear | 2026 |
| Acentus Contracting Ltd | Sheffield | 2023 |
| Acepace Services Limited | Grimsby | 2016 |
| Acepoint Capital Ltd. | London | 2020 |
| Acepond Staffing Limited | Blackburn | 2018 |
| Acepower Recruitment PVT Ltd | Wembley | 2024 |
| Aceprime Solutions Ltd | Bracknell | 2026 |
| Aceprint West Yorkshire Ltd | Ossett | 2017 |
| Aceptive Limited | London | 2019 |
| Acer Clarus Limited | Canterbury | 2010 |
| Acer Garden Care Limited | East Horsley | 2020 |
| Acer Garden Landscapes Limited | Stafford | 2001 |
| Acer Garden Maintenance Ltd | Selby | 2020 |
| Acer Garden Services Limited | London | 2006 |
| Acer Landscapes & Grounds Maintenance Ltd | Brandon | 2025 |
| Acer Landscapes & Paving Limited | Exeter | 2003 |
| Acer Landscapes Limited | Glasgow | 2026 |
| Acer Landscaping Services Ltd | Selby | 2019 |
| Acer Palmatum Ltd | Bristol | 2019 |
| Acer Plant Limited | Cranbrook | 2017 |
| Acer Property Services Ltd | Nottingham | 2025 |
| Acer Rentals Limited | Hamilton | 2010 |
| Acer Rose Consultancy Limited | Bradford | 2024 |
| Acer Spades Garden Services Ltd | Clydebank | 2019 |
| Acer Tree & Vegetation Ltd | Cleethorpes | 2024 |
| Acer Tree Services Ltd. | Farnham | 2019 |
| Acer Tree Surgeons Limited | Chapmanslade | 2007 |
| Acera Grounds Ltd | Edinburgh | 2025 |
| Acerbus Ltd | Birmingham | 2012 |
| Acereef Limited | London | 2009 |
| Acerna Holdings Limited | London | 2020 |
| Acerna Limited | London | 2020 |
| Acerscapes Ltd | Tamworth | 2020 |
| Acerta Group Limited | Warwick | 2016 |
| ACERTA24 Contractors Limited | Croydon | 2023 |
| ACERTA24 Limited | Croydon | 2014 |
| Acertec Property Solutions Limited | Sutton | 2007 |
| Acertia Limited | Bromley | 2013 |
| Acertitude Limited | London | 2020 |
| Acertus Limited | Petersfield | 2007 |
| Aces Fire Ltd | Pontypridd | 2009 |
| Aces High London Ltd | London | 2025 |
| Aces Organisation Ltd | Reading | 2019 |
| Aces Security Services Limited | London | 2019 |
| Aces Services Group Limited | Bristol | 1987 |
| Aceso Healthcare Recruitment Limited | Waltham Cross | 2018 |
| Acet Circular Solutions Ltd | Runcorn | 2021 |
| Acetate Products Limited | Enderby | 1926 |
| Acetech Security Limited | St Osyth | 2007 |
| Acetrip Limited | London | 1997 |
| Acewashing Limited | Milton Keynes | 2011 |
| Acework Limited | London | 2012 |
| Acey Services Ltd | Yateley | 2025 |
| ACF Automotive Solutions Ltd | Worcester | 2018 |
| ACF Enterprise Limited | Tonbridge | 2014 |
| ACF I-C H1 (UK) Limited | London | 2022 |
| ACF Ltip Limited | Sheffield | 2019 |
| ACF Security Ltd | Antrim | 2022 |
| Acfe-Uk Ltd | Kington | 2020 |
| Acfin Licensing Limited | London | 2008 |
| Acfm Technical Services Ltd | Dingwall | 2017 |
| ACG 201 Ltd | Edinburgh | 2024 |
| ACG Care Ltd | Barking | 2015 |
| ACG Engineering Limited | North Lincolnshire | 2005 |
| ACG Finance Limited | Bristol | 2016 |
| ACG Global Services Limited | Horsham | 2024 |
| ACG Mgmt UK Limited | London | 2023 |
| ACG Nextgen Partners Limited | Tonbridge | 2020 |
| ACG Plant and Equipment Ltd | Colchester | 2026 |
| ACG Rentals Limited | London | 2012 |
| ACG Solutions Ltd | Stourport-On-Severn | 2022 |
| ACG Trade Ltd | Newcastle Upon Tyne | 2025 |
| ACG Trading Ltd | Cardiff | 2010 |
| ACG Tree Surgery Ltd | Eastbourne | 2019 |
| ACG Trees Limited | Larne | 2025 |
| Acgi Limited | London | 2009 |
| ACH (Stamford) Limited | London | 2019 |
| ACH (Witham) Limited | London | 2018 |
| ACH Chiswick Limited | London | 2019 |
| ACH Excalibur Limited | London | 2019 |
| ACH Group Management Limited | Salford | 2009 |
| ACH Healthcare Ltd | Harlow | 2017 |
| ACH Hollingsworth Ltd | Coventry | 2025 |
| ACH London Limited | London | 2017 |
| ACH Manthorpe Limited | London | 2018 |
| ACH Pre-Hospital Limited | Oxted | 2020 |
| ACH Scylla Limited | London | 2025 |
| Achaemenia Ltd | London | 2020 |
| Achates Limited | Aberdeen | 2012 |
| Acheathicz Ltd | Edinburgh | 2023 |
| Achefabroad Tours Ltd | Stockport | 2024 |
| Achenar Limited | Edinburgh | 1999 |
| Acheson Attachment Hire Ltd | Sittingbourne | 2014 |
| Achg Ltd | Warrington | 2023 |
| Achi Amaka Tech UK Ltd | London | 2025 |