| 01237850 Ltd | Water & waste | 1975 |
| 12 Caerau Crescent (Management) Limited | Real estate | 1994 |
| 4CAST Solutions Ltd | Information & communication | 2003 |
| A Walsh Services Limited | Agriculture & fishing | 2003 |
| A.C. Puddle & Co. Limited | Construction | 1974 |
| A.I.D. Management and Property Services Limited | | 1986 |
| A.Jones & Co.(Usk)Limited | Wholesale & retail | 1972 |
| Aacme Glass Limited | Construction | 1987 |
| Abfab Welding Limited | Manufacturing | 2006 |
| Acorn (Synergie) UK Limited | Professional & scientific | 1997 |
| Albarley Farley Ltd | Wholesale & retail | 2026 |
| Albion Homes Group Ltd | Financial services | 2023 |
| Alexstel Limited | Real estate | 1999 |
| Arbour Growers Limited | Agriculture & fishing | 1997 |
| Arch Engineering Co (Newport) Limited(The) | Manufacturing | 1947 |
| Archie Thomas Ltd | Wholesale & retail | 1985 |
| Architectural and Industrial Design Limited | | 1983 |
| Architen Landrell Manufacturing Limited | Construction | 1983 |
| Arthur Brothers Transport Limited | Transport & logistics | 2000 |
| Arvin European Holdings (UK) Limited | Administrative & support | 1999 |
| Arvinmeritor Pension Trustees Limited | Other services | 1997 |
| Axisdene Limited | | 1989 |
| B & S Bailiff Services Limited | Administrative & support | 2002 |
| B & W Plant Limited | Administrative & support | 1987 |
| B Sidoli & Sons Limited | Manufacturing | 1963 |
| Bain Driving Services Limited | Transport & logistics | 2015 |
| Ballotstride Limited | Information & communication | 1986 |
| Belfry Developments | | 1995 |
| Birdel Limited | Professional & scientific | 1993 |
| Blackwood Engineering Limited | Manufacturing | 1946 |
| Blackwood Specsavers Limited | Wholesale & retail | 1991 |
| Blackwood Visionplus Limited | Wholesale & retail | 1994 |
| Bluewater Homes Limited | Construction | 1999 |
| Bondtrend Limited | Manufacturing | 1983 |
| BOO the Goose Limited | Professional & scientific | 2019 |
| Bribble (Fashion) Limited | | 1975 |
| Bristol Ship Repairers Ltd | Professional & scientific | 1975 |
| Bryan Watkins & SON Handyman Limited | Wholesale & retail | 2002 |
| Brynmawr Ebbw Vale Limited | Hospitality | 2022 |
| Burama Limited | Health & social care | 2019 |
| Canines in Nature Ltd | Administrative & support | 2024 |
| Capron Building & Roofing Limited | Construction | 1997 |
| Cedar Systems Limited | Information & communication | 1991 |
| Chepstow Automotive Solutions Ltd | Wholesale & retail | 2024 |
| Choice Bedroom Design Limited | | 1987 |
| Cinelight Films Limited | Information & communication | 2003 |
| Colin's Fish Bar Ltd | Wholesale & retail | 2007 |
| Country Boiler Services Limited | Construction | 1965 |
| Country Tastes Limited | Manufacturing | 1982 |
| Countryman Inns Limited | Professional & scientific | 1998 |
| Crane Process Flow Technologies Ltd | Manufacturing | 1947 |
| Crickhowell Estates Limited | Construction | 1971 |
| Crimsonward Limited | Professional & scientific | 1982 |
| Croft Engineering & Site Services Ltd. | Manufacturing | 2003 |
| Cruz Engineering Tredegar Limited | Manufacturing | 2001 |
| Cryotech Limited | Extraterritorial | 1998 |
| D&D Care Ltd | Health & social care | 2025 |
| D.Howells Limited | Wholesale & retail | 1960 |
| Dark Blue (UK) Limited | Water & waste | 2004 |
| Datacolor UK Ltd | Manufacturing | 1969 |
| Davies & Powell Electrical Engineers Ltd | Construction | 2006 |
| Davis & Sons (EST.1747) Limited | Professional & scientific | 1996 |
| Davis & Sons (Financial Services) Limited | | 1990 |
| Deltabase Limited | | 1981 |
| Design Survey and Build Limited | Wholesale & retail | 1987 |
| Diamond Construction Limited | Wholesale & retail | 1997 |
| Digital Promotions Limited | | 1992 |
| DKS Structures Ltd. | | 2007 |
| DOA Drylining Limited | Construction | 2026 |
| Dolphin Stairlifts (S. Wales) Limited | Wholesale & retail | 2002 |
| DON Church Building Contractors Limited | Construction | 2002 |
| Drivex Travel Ltd | Transport & logistics | 2025 |
| E. Mcmahon (Transport) Limited | Information & communication | 1977 |
| Earlswood Marketing Limited | Information & communication | 2002 |
| Earlyhawk Limited | | 1988 |
| Electrospark Limited | Manufacturing | 1983 |
| Eliot Licensing Limited | | 1977 |
| Elite Event Solutions Limited | Administrative & support | 2003 |
| Elmead Clothing Limited | | 1987 |
| EM Pubs Ltd | Hospitality | 2019 |
| Emergency Medical Services Limited | | 1980 |
| Empirechart Limited | | 1987 |
| Energy Recovery Investments Limited | Mining & quarrying | 2008 |
| Evergreen Management Company Limited | Real estate | 1989 |
| F.L. Wangler Limited | Health & social care | 1979 |
| Fairfax Financial Management Limited | Professional & scientific | 2007 |
| Family Finance Limited | Financial services | 1953 |
| Family Leasing Limited | Professional & scientific | 1978 |
| Faucets Limited | Wholesale & retail | 2003 |
| Faxserve Limited | Professional & scientific | 2002 |
| Felnex (99) Limited | Wholesale & retail | 1990 |
| Fern A.F.C. Sports & Social Club Limited | Administrative & support | 2000 |
| Fiber-Fusion Limited | | 1981 |
| Fields Park Flats (Management) Limited | Households | 1961 |
| Flyover Garage Limited | Wholesale & retail | 2002 |
| Forecasting and Planning Limited | Professional & scientific | 1999 |
| FORTYFORTY1010 Limited | Wholesale & retail | 2018 |
| Freshstartfamilylaw Ltd | Administrative & support | 2025 |
| G Force Karting (Wales) Limited | Arts & recreation | 1999 |
| G.O.S Investment Properties Limited | Real estate | 2021 |