| 16258894 Ltd | Households | 2025 |
| 1980 KP Ltd | Financial services | 2025 |
| 327GB Ltd | Hospitality | 2020 |
| A & R Glazing and Joinery Limited | Manufacturing | 2024 |
| A C Janes and SON Limited | Other services | 2015 |
| A Handy Plumber Limited | Construction | 2019 |
| A Negri Limited | Real estate | 2024 |
| A S Jenkins Limited | Transport & logistics | 2013 |
| AB Fit Gym Ltd | Arts & recreation | 2024 |
| Aberbeeg Funeral Home Limited | Other services | 2017 |
| Abertillery & District Museum Society | Arts & recreation | 1996 |
| Abertillery BG RFC Fields & Facilities Limited | Arts & recreation | 2019 |
| Abertillery Bluebirds AFC Limited | Arts & recreation | 2018 |
| Abertillery Bowls Club Limited | Arts & recreation | 2016 |
| Abertillery Excelsiors AFC Ltd | Arts & recreation | 2016 |
| Abertillery MOT and Tyre Centre Ltd | Wholesale & retail | 2019 |
| ABG Lift Truck Training Ltd. | Education | 2014 |
| ABV (AB) Ltd | Wholesale & retail | 2025 |
| Acceleratenocode Ltd | Information & communication | 2025 |
| Ace Upholstery Services Limited | Administrative & support | 2016 |
| Actabo Ltd | Professional & scientific | 2024 |
| AGE of Awakening Ltd | Information & communication | 2024 |
| AH Building and Design Ltd | Construction | 2025 |
| Ali's Barber HS Ltd | Other services | 2024 |
| Anatolya Catering Ltd | Hospitality | 2025 |
| Andrew Boulton Properties Limited | Real estate | 2014 |
| Ansteyapps Limited | Information & communication | 2026 |
| Apex Specialists Roofing and Cladding Ltd | Construction | 2026 |
| Aquacompliance Ltd | Professional & scientific | 2026 |
| Arachno Terra Ltd | Wholesale & retail | 2021 |
| Armstrong Taxi's Ltd | Transport & logistics | 2026 |
| Art of Combat Martial Arts Ltd | Arts & recreation | 2014 |
| Arvans Civil Engineering Limited | Construction | 1999 |
| ASC Window Furnishings Limited | Manufacturing | 2023 |
| Asset Cars Ltd | Manufacturing | 2015 |
| Asset Estates Ltd | Real estate | 2009 |
| Atlas Commerce & Studio Ltd | Wholesale & retail | 2026 |
| Augusta Plumbing Ltd | Manufacturing | 2012 |
| Automotive Facility Solutions Ltd | Wholesale & retail | 2022 |
| B & B Garage Ltd | Wholesale & retail | 2022 |
| Baaz Investment Limited | Financial services | 2024 |
| Badu Builders Limited | Construction | 2025 |
| Base Precision Ltd | Manufacturing | 2021 |
| Beelifts Coaching Ltd | Public administration | 2023 |
| Bellerophon Communications Ltd | Information & communication | 2018 |
| Benefitsupport Specialists Ltd | Professional & scientific | 2024 |
| Best Kebab SIX Bells Ltd | Hospitality | 2026 |
| Bethel Accommodation Ltd | Hospitality | 2025 |
| Bettws Foods Ltd | Hospitality | 2025 |
| Bitofeverythinguk Ltd | Wholesale & retail | 2025 |
| Black Lion Enterprises Limited | Hospitality | 2009 |
| Black Mountain Coffee Ltd | Hospitality | 2023 |
| Blackstone Garden Waste and House Maintanence Limited | Water & waste | 2023 |
| Blaina Bowls Club | Hospitality | 2009 |
| Blaina Community Institute Ltd | Arts & recreation | 2016 |
| Blaina Hand Car Wash Ltd | Administrative & support | 2024 |
| Bluesemporium CYF | Wholesale & retail | 2025 |
| Bolakar Plumbing & Heating Ltd | Construction | 2021 |
| Bolers Travel Services Ltd | Transport & logistics | 2020 |
| Boozy Bods Ltd | Manufacturing | 2012 |
| Bren Carpentry Ltd | Manufacturing | 2021 |
| Britton Design Limited | Professional & scientific | 2022 |
| Brynithel RFC Limited | Arts & recreation | 2017 |
| Brynteg House Management Company Limited | Administrative & support | 2002 |
| Btm&P Trans Limited | Transport & logistics | 2021 |
| Building Survey Doctor Limited | Professional & scientific | 2014 |
| Bushido Community Wellbeing CIC | Education | 2024 |
| C & a Fabrication Services Ltd | Manufacturing | 2020 |
| C & R Travel Limited | Transport & logistics | 2007 |
| C G Fencing SW Ltd | Construction | 2024 |
| C S Caravan Hire Limited | Hospitality | 2024 |
| C&S Caravan Hire Limited | Hospitality | 2024 |
| C.J. Motor Spares Ltd | Wholesale & retail | 2011 |
| C.M. 1997 Limited | Construction | 1997 |
| CAI S D Ltd | Construction | 2019 |
| Calefaction Services Limited | Construction | 2021 |
| CAM Motor Spares Limited | Wholesale & retail | 2004 |
| Canira Electricians Limited | Construction | 2014 |
| Captains Adventure Limited | Administrative & support | 2020 |
| Cashmere Valley Ltd | Wholesale & retail | 2024 |
| Chairman CBF Ltd | Other services | 2017 |
| Child & Child Accountants Ltd | Professional & scientific | 2004 |
| Chillit Refrigeration Services Ltd | Manufacturing | 2017 |
| Chilton Bulk Transport Limited | Transport & logistics | 2010 |
| Chock Shop Retail Limited | Wholesale & retail | 2025 |
| Chock Shop South Wales Ltd | Wholesale & retail | 2021 |
| CHR Civils Ltd | Professional & scientific | 2011 |
| Citydrive Autos Ltd | Wholesale & retail | 2025 |
| CJT Electrics Limited | Construction | 2021 |
| Colla Voce Ltd | Arts & recreation | 2010 |
| Comfortzone Home Furnishers Limited | Wholesale & retail | 2008 |
| Community Fitness & Wellbeing Ltd | Arts & recreation | 2017 |
| Conprop Limited | Real estate | 2019 |
| Contrad Limited | Professional & scientific | 2013 |
| Corona Marketing Limited | Professional & scientific | 2019 |
| Coutts Hall Consulting Limited | Professional & scientific | 2018 |
| D Development UK Ltd | Construction | 2018 |
| D S a 2020 Ltd | Wholesale & retail | 2020 |
| D V S Vehicle Solutions Limited | Wholesale & retail | 2003 |
| D&S Design Print Repair Ltd | Manufacturing | 2020 |