| A Batanero Consulting Limited | Bristol | 2019 |
| A Bateman Consulting Ltd | Worcester | 2022 |
| A Bathgate Joiners Limited | Edinburgh | 2016 |
| A Beange Garden Services Limited | Balgownie Road, Bridge Of Don | 2012 |
| A Beautiful Place to GET Lost Ltd | London | 2023 |
| A Bells Removals and Storage Ltd | Edinburgh | 2019 |
| A Best Detailers Ltd | Nottingham | 2023 |
| A Better Choice Interiors (NW) Limited | Stockport | 2015 |
| A Better Property Ltd | Hampton | 2011 |
| A Better View Limited | Ipswich | 2013 |
| A Better World Comics and Games Limited | Pontypridd | 2013 |
| A Biddle Book-Keeping Services Limited | Watford | 2008 |
| A Biddles Ltd | Leeds | 2015 |
| A Billingham Forensic Consultants Ltd | Amersham | 2009 |
| A BIT of Green Ltd | Wellingborough | 2007 |
| A Blackdog Event Ltd | Halesworth | 2017 |
| A Blackmore Limited | Swindon | 2023 |
| A Blair Window Cleaning Ltd | Larkhall | 2026 |
| A Bligh Exterior Cleaning Ltd | Portsmouth | 2025 |
| A BNB Property Care and Maintenance Ltd | Bognor Regis | 2021 |
| A Bold YOU Ltd | London | 2020 |
| A Bond Consulting Limited | London | 2016 |
| A BOY and HIS Dog Ltd | London | 2023 |
| A Branch Above Ltd | South Molton | 2019 |
| A Brick by Brick CIC | Abbey Wood | 2025 |
| A Bright Clean Service Limited | Thornton Cleveleys | 2022 |
| A Brighter Outlook Limited | Worthing | 2013 |
| A Britton & C Hewitt WP Ltd | Billingham | 2024 |
| A Broadway Ltd | Middx, Hillingdon | 2017 |
| A Brocklehurst Limited | Loughborough | 2014 |
| A Brown Services Limited | Norwich | 2019 |
| A Brown Specialist Garden Bases Limited | Salisbury | 2023 |
| A Brownlee Ltd | Broadstairs | 2016 |
| A Burden Shared Limited | Birmingham | 2025 |
| A Burgess Consultancy Ltd | Bromsgrove | 2024 |
| A Burn Landscape Gardener Limited | York | 2021 |
| A Burstow Plant Hire Ltd | Camborne | 2014 |
| A Butler Enterprises Ltd | Basildon | 2026 |
| A Byrne Consultancy Limited | Towcester | 2017 |
| A C Allan Consulting Limited | Dunstable | 2014 |
| A C Binns Food Co Limited | Kettering | 2021 |
| A C Binns Limited | Kettering | 2011 |
| A C Binns Storage Limited | Kettering | 2020 |
| A C Buck Limited | Halesowen | 2023 |
| A C Butcher & Co Limited | Nottingham | 2001 |
| A C C London Limited | Downe | 1998 |
| A C Carrington Arboriculture & Landscapes Ltd | Heywood | 2020 |
| A C Cleaning Services (Gloucestershire) Limited | Stroud | 2014 |
| A C Clinical Consulting Limited | Eastleigh | 2014 |
| A C Consultancy Design Limited | Southend-On-Sea | 2011 |
| A C Creative Limited | Halifax | 2005 |
| A C Dominic Limited | London | 2017 |
| A C Electrics Ltd | Barrow-In-Furness | 2018 |
| A C Elite Cleaners Limited | Wokingham | 2019 |
| A C Forklifts Limited | Wigan | 2009 |
| A C G Builders Sussex Limited | Lancing | 2017 |
| A C G Groundworks Ltd | Lancing | 2018 |
| A C George Ltd | Great Missenden | 2011 |
| A C Grounds Services Ltd | Bury St. Edmunds | 2012 |
| A C H Services (UK) Limited | Swanley Village | 2005 |
| A C I Training & Consultancy Ltd | Chepstow | 2011 |
| A C Jigs Ltd | Castle Bromwich | 2013 |
| A C Landscape Contracts Limited | Colchester | 2010 |
| A C Landscape Services Ltd | Sheffield | 2025 |
| A C Matthews Limited | Devizes | 2007 |
| A C Old Tree Care Specialists Ltd. | Brixham | 2012 |
| A C R S Cleaning Services Limited | Aylesbury | 2023 |
| A C Recruitment Limited | Wisbech | 2017 |
| A C S Facilities Management Ltd. | | 2002 |
| A C Services (SW) Ltd | Fleetwood | 2012 |
| A C Services North East Limited | Hebburn | 2005 |
| A C Stonebridge & Co Limited | Sturminster Newton | 2021 |
| A C Trading Cumbria Limited | Kirkby-In-Furness | 2016 |
| A C Vinter Enterprises Limited | Leigh-On-Sea | 2005 |
| A C Webb Limited | Stafford | 2011 |
| A C Window Cleaners (South West) Ltd | Coventry | 2026 |
| A Call Away Ltd | Liverpool | 2009 |
| A Canadian in Europe Ltd | Glasgow | 2007 |
| A Capital Marketing Ltd | Ilford | 2023 |
| A Car Enterprise Limited | Bradford | 2023 |
| A Carlon Business Services Ltd | Newton-Le-Willows | 2025 |
| A Carter Ltd | Grantham | 2026 |
| A Case Company Ltd | Worthing | 2019 |
| A Cela Cleaning Ltd | Reading | 2026 |
| A Chadwick (Plant Hire) Limited | Gott | 2010 |
| A Chain of Events Ltd | London | 2007 |
| A Champs Ltd | London | 2022 |
| A Chilton Ltd | Irvine | 2016 |
| A Chimney Sweep Limited | Newcastle | 2016 |
| A City Law Firm Limited | Sudbury | 2009 |
| A Clark Landscapes & Groundworks Ltd | Cambridge | 2024 |
| A Clark Limited | Hertford | 2025 |
| A Class Care Recruitment Ltd | Bexhill-On-Sea | 2013 |
| A Class Clean Ltd | Langley | 2022 |
| A Class Cleaners Ltd | Blackpool | 2020 |
| A Class Cleaning (UK) Limited | Witney | 2007 |
| A Class Solutions Ltd | Crewe | 2025 |
| A Class Surface Cleaning Ltd | Newcastle-Upon-Tyne | 2023 |
| A Clayton Contracting Limited | Ludlow | 2010 |
| A Clean Break (Cheshire) Limited | Altrincham | 2008 |