| A RAY of Light Ltd | Solihull | 2026 |
| A Record 20 Ltd | London, Southgate | 2009 |
| A Recruitment Consultant (ARC) Limited | London | 2017 |
| A Recruitment Limited | Hull | 2019 |
| A Redfern Building Ltd | Stafford | 2018 |
| A Reid Ltd | Wirral | 2015 |
| A Reid Support Services Ltd | Montrose | 2019 |
| A Retreat for Leaders Ltd | Bishop'S Stortford | 2024 |
| A Rhodes Holdings Limited | York | 2020 |
| A Rhodes JNR Caravans Ltd | Hull | 2023 |
| A Rhodes JNR Holdings Ltd | York | 2024 |
| A Richards Associates Ltd | Cramlington | 2025 |
| A Richens Insight Ltd | Broadstone | 2026 |
| A Rolfe Window Cleaning Ltd | Upminster | 2022 |
| A Round of Applause Cleaning and Recruitment Services Ltd | Nuneaton | 2023 |
| A Royal Flush Ltd | Worthing | 2006 |
| A S & T Properties Limited | Newcastle Upon Tyne | 2018 |
| A S a Landscapes Limited | Ely | 2017 |
| A S B Car Wash Ltd | Birmingham | 2025 |
| A S Business Services (Midlands) Ltd | Birmingham | 2017 |
| A S Care Limited | Beeston | 2003 |
| A S Cleaning and Laundry Service Limited | Eastleigh | 2024 |
| A S D Retford Limited | Nr Retford | 2004 |
| A S Entertainment Ltd | Norwich | 2018 |
| A S G Roofing Specialists Ltd | Bedford | 2018 |
| A S Gane Limited | Ashford | 2014 |
| A S Gardens & Ground Maintenance Limited | Southampton | 2010 |
| A S I Security Systems Limited | Chesterfield | 2010 |
| A S Image Services Ltd | Bishop'S Stortford | 2021 |
| A S Inventories Ltd | Pinner | 2013 |
| A S L Evans Limited | Aberystwyth | 2012 |
| A S Landscapes & Groundworks Ltd | Cannock | 2025 |
| A S M Talent Europe Limited | London | 2021 |
| A S M Talent Ltd. | London | 2013 |
| A S Manpower Ltd | Hounslow | 2025 |
| A S Miles Support Services Limited | Nuneaton, | 2017 |
| A S N Associates Limited | Beckenham | 2007 |
| A S P Security Ltd | Manchester | 2017 |
| A S Premium Funding Limited | Swindon | 2011 |
| A S Reid Ltd | Paisley | 2024 |
| A S Security Alarms Limited | Chard | 2003 |
| A S Security Solutions Limited | London | 2021 |
| A S Services London Ltd | Ilford | 2025 |
| A S Support Ltd | Northfleet | 2019 |
| A S T Systems Limited | Nottingham | 2002 |
| A S Training (International) Limited | Ormskirk | 2012 |
| A S Travel & Conference Services Limited | London | 2006 |
| A Salam Resourcing Limited | Ipswich | 2022 |
| A Scaife Horse Shoeing Ltd | Darlington | 2020 |
| A Scott Electrical Limited | Edinburgh | 2016 |
| A Secret Garden Landscape Design & Implementation Ltd | Chester | 1999 |
| A Select UK Ltd | Nottingham | 2021 |
| A Shadowing Angel Security and Training Services Ltd | Belfast | 2017 |
| A Sharkey Building Services Ltd | Wirral | 2018 |
| A Shields Brickwork Ltd | Havant | 2018 |
| A Signature Bride Ltd | Hayes | 2017 |
| A Signs & Embroidery Limited | Broadstairs | 2008 |
| A Sims Garden Services Limited | Bolton | 2014 |
| A Skip Hire Limited | Swansea | 2006 |
| A Sloan Consulting Ltd | Manchester | 2026 |
| A SLY Consulting Limited | Alton | 2016 |
| A Smart Care UK Ltd | Redhill | 2026 |
| A Smart Sweep Limited | Chelmsford | 2026 |
| A Smith Exterior Services Ltd | London | 2025 |
| A Sneddon Courier & Logistics Ltd | Stirling | 2026 |
| A Solo Security Ltd | Reading | 2023 |
| A Solution 4 U Alcohol Licence Consultancy Ltd | London | 2024 |
| A Spencer Group Limited | Barrow-In-Furness | 2019 |
| A Spotless Office Limited | Reading | 2025 |
| A SQD Limited | Wolverhampton | 2025 |
| A Squared Eats Ltd | Manchester | 2017 |
| A Squared Events CIC | Plymouth | 2024 |
| A Squared Solutions Limited | Slough | 2024 |
| A Stancombe Fencing Contractors Limited | Ely | 2011 |
| A Star (Mini) Travel Limited | Swansea | 2014 |
| A Star ALL Solutions Limited | Nuneaton | 2020 |
| A Star Cars Hire Ltd | Bolton | 2024 |
| A Star Cleaning Services (Norfolk) Limited | Great Yarmouth | 2020 |
| A Star Cleaning Services Dorset Ltd | Weymouth | 2023 |
| A Star Cleaning Srvs Ltd | London | 2023 |
| A Star Cleanz Limited | Colchester | 2016 |
| A Star Consultancy & Recruitment Limited | Birmingham | 2022 |
| A Star Cover Teaching Ltd | Trowbridge | 2026 |
| A Star Crewing Ltd | Romford | 2019 |
| A Star Eco Ltd | Oldbury | 2025 |
| A Star Education Recruitment Limited | Sutton Coldfield | 2023 |
| A Star Engineering Ltd | Harlow | 2024 |
| A Star Gardens Ltd | Walton-On-Thames | 2023 |
| A Star GAS and Maintenance Ltd | Buckhurst Hill | 2024 |
| A Star Gym Limited | Wakefield | 2017 |
| A Star HCW Ltd | London | 2025 |
| A Star KS Cleaning Services Limited | Ilford | 2018 |
| A Star Personell Ltd | Dewsbury | 2025 |
| A Star Private Tutoring Ltd | Norwich | 2016 |
| A Star Recruitment Limited | St. Helens | 2009 |
| A Star Rental Limited | London | 2019 |
| A Star Restoration Ltd. | Trowbridge | 2002 |
| A Star Roofing Limited | Preston | 2017 |
| A Star Tech Agency Ltd | London | 2026 |
| A Star Valet and Detailing Ltd | Edinburgh | 2023 |