| A & M Ventures Limited | Isleworth | 2016 |
| A & M Visa Services Ltd | London | 2011 |
| A & M Wilson Holdings Limited | Solihull | 2009 |
| A & MI Services Limited | Bolton | 2013 |
| A & MKJ Limited | Minehead | 2012 |
| A & ML Limited | Bexleyheath | 2012 |
| A & MPG Limited | South Yorkshire | 2003 |
| A & N Care Solicitors Limited | Sheffield | 2011 |
| A & N Cerberus Ltd | Newcastle Upon Tyne | 2025 |
| A & N Consultancy Limited | Northamptonshire | 2004 |
| A & N Consultants Limited | Guisborough | 2024 |
| A & N Fire Consultancy Ltd | Royston | 2024 |
| A & N Schofield Ltd | Wimbledon | 2012 |
| A & O Logistics Limited | Surrey | 2002 |
| A & O Ventures Limited | Hereford | 2009 |
| A & P Accountancy Limited | London | 2012 |
| A & P Accountants Limited | Milton Keynes | 2018 |
| A & P Asset Management Limited | Leicester | 2024 |
| A & P Birkenhead Properties Limited | Hebburn | 2003 |
| A & P Consult Limited | Harrow | 2022 |
| A & P Consultancy Ltd | Wigston | 2018 |
| A & P Defence Limited | Hebburn | 2003 |
| A & P Designs Limited | Witham | 2003 |
| A & P Developments Ltd | Waterlooville | 2010 |
| A & P DRY Docks Limited | Liverpool | 2001 |
| A & P Dynamic Design Limited | Rotherham | 2009 |
| A & P Flow Control Ltd | Wigan | 2019 |
| A & P Management Consultancy Limited | London | 2019 |
| A & P Sharpe Limited | Mauchline | 2017 |
| A & P Ship Repairers Limited | Hebburn | 1995 |
| A & P Solicitors Limited | Harrow | 2017 |
| A & P Solutions Limited | Dronfield | 2003 |
| A & P Southampton Limited | Hebburn | 1985 |
| A & P Structural Engineering Limited | Ballymena | 2007 |
| A & P W Consultants Limited | Crowthorne | 2002 |
| A & P Wallsend Limited | Hebburn | 2004 |
| A & Q Accountants Limited | Stoke-On-Trent | 2024 |
| A & Q Partnership (London) Limited | London | 1992 |
| A & R Accountancy Limited | Leeds | 2006 |
| A & R Accountancy Services Limited | Stanmore | 2016 |
| A & R Accountants Limited | Derby | 2007 |
| A & R Associates Limited | Brighton | 1984 |
| A & R Automation Consulting Ltd | London | 2024 |
| A & R Business Services Limited | Orpington | 2010 |
| A & R Cameron Ltd | Helensburgh | 2025 |
| A & R Consultancy Solutions Ltd | Worcester | 2020 |
| A & R Consultants (UK) Limited | Torquay | 2015 |
| A & R Consulting Services Limited | Stanmore | 2013 |
| A & R Direct (UK) Limited | Haslemere | 1994 |
| A & R Edelman Limited | London | 1996 |
| A & R Engineering Ltd | Stafford | 2023 |
| A & R European Designs Ltd | London | 2026 |
| A & R Innes Consultancy Ltd | Motherwell | 2024 |
| A & R James Consultancy Ltd | Lydney | 2019 |
| A & R Motor Holdings Limited | | 2005 |
| A & R Parsons Engineering Ltd | Lincoln | 2024 |
| A & R Process Design Limited | Macclesfield | 2005 |
| A & R Sanderson Holdings Ltd | Blackburn | 2014 |
| A & R Sheen Associates Ltd | Teddington | 2013 |
| A & R Trading Glasgow Limited | Clarkston | 2018 |
| A & R Wright Consulting Limited | Norwich | 2016 |
| A & S (1992) Limited | Hayes | 2000 |
| A & S Accountancy Services Ltd | Mildenhall | 2024 |
| A & S Accounting Ltd | Wembley | 2019 |
| A & S Accounting Services Ltd | Ilford | 2015 |
| A & S Associates (Accounting Services) Ltd | Wigston | 2022 |
| A & S Bickerton Ltd | Stoke-On-Trent | 2025 |
| A & S Business Services Limited | Kirkcudbright | 2003 |
| A & S Coding Ltd. | Consett | 2012 |
| A & S Consultants Limited | Harrow | 1999 |
| A & S Cullen Consulting Ltd | Warrington | 2023 |
| A & S Design Associates Ltd | Oldham | 2010 |
| A & S Evans Ltd | Chester | 2023 |
| A & S Fire Safety Ltd. | Merthyr Tydfil | 2017 |
| A & S Illahi Limited | Birmingham | 2004 |
| A & S Inman (Designs) Limited | Manchester | 1976 |
| A & S Legal Consultancy Limited | Windsor | 2022 |
| A & S Machinery Limited | Huddersfield | 2007 |
| A & S Marketing Ltd | London | 2012 |
| A & S Outsourcing Limited | London | 2018 |
| A & S P Services Limited | Halesowen | 2017 |
| A & S Property Services (Blackpool) Ltd | Blackpool | 2023 |
| A & S Safety Ltd | Stoke-On-Trent | 2003 |
| A & S Scales Limited | Scarborough | 2020 |
| A & S Scientific Limited | Bradford | 2006 |
| A & S Smith Consultancy Ltd | Frome | 2024 |
| A & S Transport Solutions Ltd | Northampton | 2017 |
| A & S Ventures Ltd | | 1999 |
| A & S Wilson Ltd | Clevedon | 2019 |
| A & SA International Company Limited | Grangetown | 2007 |
| A & SC Associates Limited | Middlesbrough | 2021 |
| A & SS Consultancy Ltd | London | 2026 |
| A & T Architectural Design Ltd | Preston | 2017 |
| A & T Consultants Ltd | London | 2024 |
| A & T Goody Limited | Huntingdon | 2020 |
| A & T Holdings Limited | Northampton | 2017 |
| A & T Limited | Watford | 2015 |
| A & T Professional Services Ltd | London | 2026 |
| A & T Rana Limited | Solihull | 2020 |
| A & V Associates Limited | Rugeley | 2015 |