| Accentus Medical Limited | Didcot | 2001 |
| Acceo Solutions Limited | College Town, Sandhurst | 2019 |
| Accept & Proceed Limited | Hassocks | 2007 |
| Accept Anycoin Limited | London | 2022 |
| Accept Consulting Ltd | Derby | 2012 |
| Acceptable Risk Limited | Godalming | 2025 |
| Accepted Group Ltd | Basildon | 2022 |
| Acceptedpayments Ltd | Cinderford | 2020 |
| Acceptor Limited | Croydon | 2024 |
| Acceptspec Limited | Sheffield | 1953 |
| Acceptus Ltd | London | 2024 |
| Accerna Finance Ltd | Keighley | 2025 |
| Accertum Ltd | Sittingbourne | 2018 |
| Access Global Logistics Limited | Walsall | 2007 |
| Access & Inclusion by Design Ltd | Tyne & Wear | 2006 |
| Access & NDT Services Limited | Burton | 2004 |
| Access 13 Limited | Leeds | 2005 |
| Access 2 Advice Community Interest Company | Derby | 2007 |
| Access 2 Children Ltd | Ringwood | 2024 |
| Access 2 Comfort Limited | Norwich | 2013 |
| Access 2 Languages Limited | Loughborough | 2013 |
| Access 2 Specialists Ltd | Cheltenham | 2024 |
| Access 360 Limited | Chelmsford | 2009 |
| Access Accountancy Services Ltd | Bradford | 2017 |
| Access Accountants Ltd | Birmingham | 2021 |
| Access Accounting Limited | Loughborough | 2009 |
| Access Accounting Services Limited | Wembley | 1993 |
| Access Accounts Services Ltd | Newark | 2002 |
| Access Advertising, Marketing and Design Limited | Bournemouth | 1999 |
| Access Advisors (UK) Limited | Epsom | 2013 |
| Access Ahead Limited | Aberdeen | 2011 |
| Access and Building Consultancy Limited | Exeter | 2015 |
| Access and Countryside Management Ltd | Mildenhall | 2015 |
| Access and Dock Ltd | Birmingham | 2024 |
| Access and Escape Limited | Much Wenlock | 2007 |
| Access and Inclusion Ltd | Chesterfield | 2022 |
| Access and Party Wall Specialists Ltd | London | 2025 |
| Access and Patient Research Ltd | London | 2017 |
| Access and Value Writing Limited | Cardiff | 2023 |
| Access Arabia Ltd | London | 2025 |
| Access Architects Ltd | London | 2002 |
| Access Architecture Limited | Hull | 2000 |
| Access Associates Limited | Cheltenham | 2003 |
| Access Branding Ltd | London | 2026 |
| Access Business Services (Edinburgh) Limited | Edinburgh | 2013 |
| Access Business Solutions Limited | Warrington | 2011 |
| Access Capital Markets Limited | London | 2014 |
| Access Care Promotions Limited | Stockbridge | 2017 |
| Access Clubs Title Limited | Camberley | 2002 |
| Access Coating Specialists Ltd | Middlesbrough | 2019 |
| Access Communications and Engagement Ltd | Ballynahinch | 2023 |
| Access Company Formations Limited | London | 1996 |
| Access Compliance Group Ltd | Ballycastle | 2025 |
| Access Composites Ltd | Bristol | 2023 |
| Access Conscious Consultancy Limited | Liverpool | 2021 |
| Access Consultancy Ltd | Halesowen | 2000 |
| Access Consultancy Services Limited | Pulford | 2020 |
| Access Consulting Group Limited | Bournemouth | 2016 |
| Access Consulting Limited | Slough | 2024 |
| Access Consulting Specialists Ltd | London | 2025 |
| Access Contracting Limited | Castleford | 1996 |
| Access Control Solutions (UK) Limited | 72 Boston Road Leicester | 2002 |
| Access Conveyancing Services Ltd | Harlow | 2022 |
| Access Countryside Consultancy Ltd | Nantwich | 2016 |
| Access Credit Management Limited | Sheffield | 2000 |
| Access Defender Ltd | Corby | 2024 |
| Access Design and Engineering Limited | Solihull | 1988 |
| Access Design Solutions UK Ltd | Blackwood | 2012 |
| Access Digital Solutions Ltd | London | 2025 |
| Access Digital Systems Limited | Chester | 2005 |
| Access Direct (Hazardous Materials) Services Ltd | Kingstone | 2003 |
| Access Direct Legal Ltd | Manchester | 2017 |
| Access DM Limited | High Street | 2018 |
| Access Enabled Consulting Ltd | Bath | 2025 |
| Access Engineering Services Limited | Wotton-Under-Edge | 2008 |
| Access Events Ltd | Brentwood | 2022 |
| Access Fire Doors Ltd | Liverpool | 2021 |
| Access Fire Risk Ltd | Liverpool | 2019 |
| Access for ALL - South West CIC | Bristol | 2025 |
| Access for ALL UK Ltd | Bristol | 2026 |
| Access for Business (North East) Limited | Crook | 1999 |
| Access for Business Limited | Crook | 2001 |
| Access for Wigan (Holdings) Limited | Manchester | 2008 |
| Access for Wigan Limited | Manchester | 2008 |
| Access Freedom Experiences CIC | Warrington | 2024 |
| Access Group International Ltd | London | 2019 |
| Access Group Property Services Limited | Manchester | 2005 |
| Access Guard Innovations Ltd | Northolt | 2024 |
| Access Health Ltd | Preston | 2026 |
| Access Heights Ltd | Great Yarmouth | 2025 |
| Access Highways Services Ltd | Northampton | 2025 |
| Access Holdings Group Limited | Stockton-On-Tees | 2016 |
| Access Holdings Management Company Limited | Altrincham | 2025 |
| Access Immigration Law Ltd | Newcastle Upon Tyne | 2012 |
| Access in Design Limited | Walsall | 2008 |
| Access Included Limited | Cardiff | 2004 |
| Access Industries (UK) Limited | London | 2004 |
| Access Industries Group Limited | Berkhamsted | 1995 |
| Access Industry Management & Services Ltd | London | 2009 |
| Access Innovation Media UK Ltd | London | 2012 |