| Acas Kitchens and Interiors Ltd | Gateshead | 2023 |
| Acast Stories Limited | London | 2014 |
| Acaster Forge Ltd | York | 2015 |
| Acaster Homes Limited | York | 2014 |
| Acatenango Limited | London | 2026 |
| Acatolyst Limited | Ross-On-Wye | 2002 |
| ACB Cooling Ltd | Addlestone | 2024 |
| ACB FM Solutions Ltd | Telford | 2024 |
| ACB Joinery Services Limited | West Isley | 2007 |
| ACB Tools Ltd | Redhill | 2026 |
| ACB Welding Ltd | Bolton | 2022 |
| ACC Aero Limited | Winchester | 2019 |
| ACC S1 Limited | Redhill | 2006 |
| ACC Systems Limited | Kirby Muxloe | 1988 |
| ACC Tyres Limited | Chichester | 2012 |
| ACC Wood Limited | Torquay | 2017 |
| Acc+Ess Limited | Wick | 2011 |
| Accass Trading Ltd | London | 2024 |
| Accel Power Supplies Limited | West Sussex | 1991 |
| Accel-Heal Technologies Limited | Edenbridge | 2019 |
| Accelerate Newco Limited | Newcastle | 2026 |
| Accelerated IOT Systems Ltd | Eastleigh | 2020 |
| Accelerating Ltd | Northampton | 2021 |
| Accelero Sports Ltd | Hexham | 2018 |
| Accelevate UK Ltd | London | 2020 |
| Accelleron UK Ltd | Telford | 2021 |
| Accelsius, Ltd | London | 2024 |
| Accent Commercial Resources Limited | Heanor | 2012 |
| Accent Household Textiles Limited | London | 1944 |
| Accentia Arts Limited | Blackburn | 2006 |
| ACCENTU8 Limited | Cowbridge | 2014 |
| Accentuate Games Ltd | Wirral | 2013 |
| Accepted Designs Limited | Ely | 2006 |
| Access & Engineering Ltd | Hartlepool | 2021 |
| Access Automation Services Ltd | Portadown | 2023 |
| Access Barriers UK Ltd | Bromsgrove | 2018 |
| Access Building Products Group Limited | York | 2026 |
| Access Chemicals Limited | Tamworth | 1994 |
| Access Control Direct Limited | Uttoxeter | 2010 |
| Access Control Ltd | Northampton | 2017 |
| Access Control Solutions NW Ltd | Abergele | 2025 |
| Access Covers Limited | Cannock | 2011 |
| Access Door Automation Ltd | Huddersfield | 2014 |
| Access Door Systems Limited | Manchester | 1989 |
| Access Doors Limited | Higham Ferrers | 2000 |
| Access Energy 3 Ltd | London | 2022 |
| Access Engineering (North) Limited | Sheffield | 1997 |
| Access Event Solutions Ltd | London | 2025 |
| Access Expeditions Ltd | Haverhill | 2016 |
| Access Freedom Ltd | Warrington | 2021 |
| Access Garage Doors (South Wales) Limited | Cardiff | 2008 |
| Access Homelifts Limited | Southend-On-Sea | 2016 |
| Access Industrial Tyres Ltd | Ashford | 2020 |
| Access Innovations UK Limited | Rowley Regis | 2004 |
| Access Irrigation Limited | Northampton | 1976 |
| Access Ladders (UK) Limited | Northallerton | 1994 |
| Access Limited | Reading | 1984 |
| Access Locks & Key Shop Ltd. | Ellesmere Port | 2008 |
| Access Mechanical Handling Limited | Bellshill | 1986 |
| Access Opening Systems (Installations) Ltd | Preston | 2011 |
| Access Panels Direct Limited | Walsall | 2009 |
| Access Print Ltd | London | 2024 |
| Access Professionals Limited | Bracknell | 2005 |
| Access Repair Services Ltd | Glasgow | 2020 |
| Access Repairs & Servicing Limited | Grays | 2019 |
| Access Rigging Services Limited | Harrow | 2023 |
| Access Security and Control Technology Ltd | London | 2025 |
| Access Service & Maintenance Limited | Huntingdon | 2009 |
| Access Service and Repair Limited | Nottingham | 2008 |
| Access Solutions and Products Ltd | Nuneaton | 2020 |
| Access Solutions Yorkshire Limited | Ossett | 2024 |
| Access Technologies Limited | Cradley Heath | 1993 |
| Access Timber Products Ltd | Sheffield | 2012 |
| Access Tooling Solutions Ltd | Swadlincote | 2015 |
| Access XL Limited | Aberdeen | 2012 |
| Access-Storage Limited | Halesown | 2010 |
| Accessafe UK Ltd | Halesowen | 2022 |
| Accessen Group Ltd | Yaxley | 2022 |
| Accessercise Ltd | London | 2020 |
| Accessesp UK Limited | London | 2002 |
| Accessible International Trading Co., Ltd | Beckenham | 2024 |
| Accessible Lift Group Limited | Kidderminster | 2021 |
| Accessible Plumbing Solutions Ltd | Ashford | 2025 |
| Accessible Products Limited | Keighley | 2017 |
| Accessible Vehicle Conversions CIC | Exeter | 2018 |
| Accessoft Ltd | London | 2020 |
| Accessories Warehouse Limited | Whitehaven | 2003 |
| Accessory International Co., Ltd | Beckenham | 2024 |
| Accesstrader Limited | Skegness | 2002 |
| Accfox Trading Limited | London | 2015 |
| Acci Airconditioning Ltd | Portsmouth | 2014 |
| Accident Express Rugby Ltd | Rugby | 2008 |
| Accidental Brewery Ltd | Lancaster | 2021 |
| Accidental Repair Technicians Limited | Northamptonshire | 2002 |
| Accion Limited | Wembley | 2019 |
| Acclaim Industrial Doors Limited | Spalding | 2018 |
| Accles & Shelvoke Limited | Sutton Coldfield | 1927 |
| Accles and Pollock Limited | Leamington Spa | 2015 |
| Acclimatise Limited | Andover Down | 2005 |
| Acclimatized Ltd | | 2003 |