| A Place to Nourish Ltd | Malvern | 2023 |
| A Plan for When I’M Gone Limited | Bristol | 2020 |
| A Plus Barber Ltd | Edinburgh | 2024 |
| A Plus Driving School Ltd | Birmingham | 2022 |
| A Plus Massage Limited | London | 2025 |
| A Plus One Limited | London | 2014 |
| A Plus Safety & Training Services Ltd | Swindon | 2011 |
| A Plus Security & Network Limited | Bracknell | 2024 |
| A Plus Security Limited | Great Wakering | 2009 |
| A Plus Security Projects Limited | Great Wakering | 2014 |
| A Plush Limited | Manchester | 2008 |
| A Poselay Limited | Walsall | 2021 |
| A Positive Change Consulting Limited | Romney Marsh | 2008 |
| A Positive Direction Limited | Penrith | 2016 |
| A Positive Start CIC | Hawick | 2017 |
| A Pretty Affair Ltd | Sheffield | 2023 |
| A Pritchard Construction Limited | Ludlow | 2017 |
| A Private Company Ltd | Salford | 2023 |
| A Product of Limited | Leeds | 2015 |
| A Proper Yorkshire Builder Ltd | Tadcaster | 2024 |
| A Pullen Memorials Ltd | Bromsgrove | 2007 |
| A R (London) Holdings Limited | Ruislip | 2022 |
| A R C Academy UK Limited | Swansea | 2011 |
| A R Cole Ltd | Heathfield | 2003 |
| A R Consultancy (Scotland) Limited | Falkirk | 2017 |
| A R Emergency Locksmiths Limited | Wallington | 2023 |
| A R Empire Ltd | Bromley | 2016 |
| A R G Building Services Ltd | | 2007 |
| A R Gibbons Limited | London | 2009 |
| A R I Trading Limited | Southampton | 2025 |
| A R Jones Agricultural Services Ltd | Llanelli | 2023 |
| A R P Reid Limited | Langport | 2009 |
| A R Peachment Limited | Norwich | 1991 |
| A R Spraying Limited | Reigate | 2010 |
| A R Supports Limited | Bradford | 2013 |
| A R T Services (Cymru) Limited | Deeside | 2009 |
| A R Twigg & SON Limited | Reading | 2012 |
| A RAE of Therapy Ltd | London | 2025 |
| A Rahman's Engineering Limited | Ilford | 2022 |
| A Ramiz & Sons Limited | Bishop'S Stortford | 2018 |
| A Rapid Response Security Ltd | Cardiff | 2011 |
| A Rated Property Services Ltd | Mitcham | 2012 |
| A Redgate Cleaners Limited | Nottingham | 2012 |
| A Reed Holdings Ltd | Blyth | 2022 |
| A Repat Ltd | Paisley | 2025 |
| A Rinaldi Ltd | | 2004 |
| A Road School of Motoring Limited | Stanford-Le-Hope | 2010 |
| A Roam From Home UK Ltd | Pontypridd | 2021 |
| A Robinson (N.I.) Ltd | Belfast | 2015 |
| A Robson Ltd | Canterbury | 2022 |
| A Room Outside Limited | | 2006 |
| A Rose Services Ltd | London | 2023 |
| A Roshan Ltd | Bolton | 2026 |
| A S C Limited | Coventry | 2002 |
| A S C Williams Landscaping Limited | Bristol | 2003 |
| A S Claims Solutions Limited | Bushey | 2017 |
| A S Collection Services Ltd | Keston | 2024 |
| A S Comp Ltd | London | 2019 |
| A S Glazing Services Ltd | Dereham | 2022 |
| A S Hair & Beauty Ltd | London | 2009 |
| A S Hardingham Limited | Norwich | 2017 |
| A S Home Care Services Ltd | Altrincham | 2010 |
| A S Madeley Ltd | Todmorden | 2014 |
| A S Valeting Ltd | London | 2020 |
| A S Webb Design and Build Ltd | Brentwood | 2017 |
| A Saba & G Saba Ltd | London | 2019 |
| A Safe Space to BE ME Ltd | Antrim | 2020 |
| A Salehi Ltd | London | 2016 |
| A Salon Called Hare Ltd | Droitwich Spa | 2020 |
| A Samanta Ltd. | Manchester | 2001 |
| A Sattar Limited | Keighley | 2013 |
| A Secret Group Limited | Ballymoney | 2025 |
| A Serbezov Ltd | Romford | 2016 |
| A Shiny Valeting Ltd | London | 2018 |
| A SIM Buildings Limited | Eastbourne | 2022 |
| A Simple Goodbye Limited | Colchester | 2019 |
| A Sinc Limited | Sheffield | 2018 |
| A Siraj Consulting Limited | Birmingham | 2017 |
| A Slater & Sons Ltd | Sheffield | 2022 |
| A Slavia Ltd | Enfield | 2024 |
| A Slice Limited | Harrow | 2014 |
| A Slice of KIM Ltd | Rickmansworth | 2022 |
| A Sound Mind Ltd | Tewkesbury | 2015 |
| A Sovereign Britain-The Resistance League Limited | Bradford | 2025 |
| A Special Place Company Ltd | Sheffield | 2023 |
| A Spiritual Occasion Limited | Watford | 2020 |
| A Star Barber (Swan's) Ltd | Burntwood | 2024 |
| A Star Barber Salon Ltd | Doncaster | 2023 |
| A Star Barber Shop Ltd | Bromsgrove | 2025 |
| A Star Barbers Ltd | Chessington | 2013 |
| A Star Barbers MOH Ltd | Reading | 2025 |
| A Star Barbers Pwllheli Ltd | Pwllheli | 2022 |
| A Star Barbers RG2 Ltd | Reading | 2026 |
| A Star Beauty & Cosmetics Limited | London | 2025 |
| A Star Beauty Ltd | Altrincham | 2017 |
| A Star Cutz Limited | London | 2025 |
| A Star Drainmasters Ltd | Welling | 2012 |
| A Star Drycleaning Limited | Romford | 2010 |
| A Star Fades Ltd | Bradford | 2025 |
| A Star Grooming Ltd | Middlesbrough | 2026 |