| 3 Celts Ltd | Builders | NP44 3AB | 2019 |
| A L Robins Partitioning & Suspended Ceiling Ltd | Builders | NP44 1LW | 2024 |
| A Roche Services Ltd | Builders | NP44 3AB | 2018 |
| A Touch of Glass and Glazing Ltd | Builders | NP44 1JW | 2022 |
| Advance Home Improvements Ltd | Builders | NP44 2YP | 2018 |
| Alpha B C Services Ltd | Builders | NP44 6JQ | 2021 |
| Apex Home Solutions Ltd | Builders | NP44 1UU | 2006 |
| Architectural Castings Ltd | Builders | NP44 3AB | 2022 |
| Avondale Exhibitions Ltd | Builders | NP44 3AB | 2009 |
| Aztec Property Tredegar Ltd | Builders | NP44 5TD | 2024 |
| Balaam Ltd | Builders | NP44 1EZ | 2012 |
| Bee National Installations Ltd | Builders | NP18 1PR | 2024 |
| Beechwood Carpentry and Timber Frame Specialist Ltd | Builders | NP18 2JJ | 2018 |
| Borefence Ltd | Builders | NP18 2EL | 2009 |
| Boss Emy Ltd | Builders | NP44 1RB | 2026 |
| Broom Homes Ltd | Builders | NP18 1LT | 2018 |
| Broomhomes River Ltd | Builders | NP18 1LT | 2018 |
| Building Bloc Ltd | Builders | NP44 3AU | 2020 |
| C&L Contract Cleaning Ltd | Builders | NP44 6HE | 2013 |
| Caerau Developments Ltd. | Builders | NP44 6JR | 2014 |
| Cbuildr Ltd | Builders | NP44 3AB | 2021 |
| Cementorious Construction Ltd | Builders | NP44 7HZ | 2020 |
| Choose Solution Ltd | Builders | NP44 1RB | 2025 |
| Christchurch Developments Npt Ltd | Builders | NP18 1JJ | 2018 |
| Clic It Management Ltd | Builders | NP44 3QG | 2025 |
| Complete Kitchens Ltd | Builders | NP44 3JU | 1996 |
| Compliant Fire Safety Solutions Ltd | Builders | NP44 1NY | 2026 |
| Corinthian Homes Group Ltd | Builders | NP18 2ED | 2019 |
| County Construction Solutions Ltd | Builders | NP44 2LE | 2023 |
| County Contractors Maintenance Services Ltd | Builders | NP44 5BG | 2003 |
| County Roofing Ltd | Builders | NP44 3NA | 2025 |
| County Scaffolding Services (Css) Ltd | Builders | NP44 3NA | 2020 |
| Cpg Services Ltd | Builders | NP18 2HJ | 2025 |
| Crmd Consulting Ltd | Builders | NP18 1QA | 2023 |
| Crownhill Monmouthshire Ltd | Builders | NP44 3AU | 2025 |
| Cw Mould Solutions Ltd | Builders | NP44 5BG | 2025 |
| Cwmbran Kitchen Floors and Doors Ltd | Builders | NP44 3JU | 2024 |
| D E Building Contractors Ltd | Builders | NP44 3AU | 2024 |
| D J Decorators Ltd. | Builders | NP44 3LN | 2002 |
| D M O’Brien Construction Ltd | Builders | NP44 3AU | 2021 |
| D P Formwork Ltd | Builders | NP18 2JX | 2007 |
| D T Contracting (South West) Ltd | Builders | NP44 7HB | 2013 |
| D.H. & S.J. Preece (Builders) Ltd | Builders | NP18 2AT | 1989 |
| Daly Grind Ltd | Builders | NP44 3QE | 2026 |
| Dbem Constructii Ltd | Builders | NP44 1RB | 2026 |
| Delaw General Builders Ltd | Builders | NP44 3AB | 2010 |
| Djr Site Services Ltd | Builders | NP18 2NF | 2011 |
| Doctor Windows Ltd | Builders | NP44 3AX | 2015 |
| Dsj Bubbles Ltd | Builders | NP18 3NS | 2020 |
| Evergreen Investment and Development Ltd | Builders | NP44 8RE | 2026 |
| Evolve Home Energy Solutions Ltd | Builders | NP44 3FD | 2015 |
| Exclusive (Ex) Ltd | Builders | NP44 3AB | 2010 |
| Facilities Maintenance Group Ltd | Builders | NP44 5BG | 2003 |
| Fcy Interiors Ltd | Builders | NP44 2BL | 2018 |
| G & G (Cwmbran) Ltd | Builders | NP44 5AZ | 2017 |
| G&D Structures Ltd | Builders | NP44 5SF | 2023 |
| G.H.P Mechanical and Electrical Ltd | Builders | NP44 3AU | 2026 |
| Gareth’S Property Maintenance Ltd | Builders | NP44 1FJ | 2024 |
| Gcs Safety Services Ltd | Builders | NP18 2BL | 2018 |
| Ge Pro-Sealants Ltd | Builders | NP44 3JU | 2006 |
| Get Zero Ltd | Builders | NP18 1AA | 2024 |
| Glanmor Developments Ltd | Builders | NP44 8HP | 1981 |
| Hillier Construction Services Ltd | Builders | NP44 3AB | 2021 |
| Home Care Maintenance Ltd | Builders | NP44 5BG | 2003 |
| Huan Yu Green Building Materials Technology Co Ltd | Builders | NP18 2LZ | 2025 |
| Ig Construction Services Ltd | Builders | NP44 2EZ | 2020 |
| Ij Construction & Civil Engineering Ltd | Builders | NP18 3XL | 2023 |
| Intershell Group Ltd | Builders | NP44 1TS | 2000 |
| Intershell Systems Ltd | Builders | NP44 1TS | 1989 |
| Isca Renewables Ltd | Builders | NP18 3EN | 2021 |
| J Tunley Contractors Ltd | Builders | NP44 6HU | 2014 |
| J.M. Vokes Ltd | Builders | NP44 5AL | 1967 |
| Jclad Cladding and Windows Ltd | Builders | NP44 2PN | 2021 |
| Jmi Construction and Civil Engineering Ltd | Builders | NP18 3XL | 2014 |
| Job Done Renovations Ltd | Builders | NP44 2QJ | 2026 |
| Just-Build UK. Ltd | Builders | NP44 3GA | 2019 |
| K B Building Contractors Ltd | Builders | NP44 3AU | 2017 |
| K Gotobed Ltd | Builders | NP18 2JS | 2016 |
| K J Building Developers Ltd | Builders | NP44 7BB | 2025 |
| K M Construction and Maintenance Ltd | Builders | NP18 2HJ | 2022 |
| Kavod Roofing & Construction Ltd | Builders | NP44 1RF | 2025 |
| Kjs Construction and Developments Ltd | Builders | NP18 2DR | 2025 |
| Langstone Driveways and Landscaping Ltd | Builders | NP18 2HE | 2021 |
| Led Sealants Ltd | Builders | NP44 1FN | 2024 |
| Lh Building and Maintenance Ltd | Builders | NP18 2HG | 2025 |
| Ljarvis Ltd | Builders | NP44 1GB | 2022 |
| Ljm Building & Maintenance Ltd | Builders | NP44 6UP | 2026 |
| Lkaia Properties Ltd | Builders | NP18 2DD | 2015 |
| Llewellyn Rhys Construction Ltd | Builders | NP18 3TB | 2025 |
| Lnlr Investments Ltd | Builders | NP18 2JB | 2023 |
| Loft South Wales Ltd | Builders | NP18 3NZ | 2016 |
| Longmore Construction Ltd | Builders | NP18 1AR | 2020 |
| Marchant Home Solutions Ltd Ltd | Builders | NP44 5JF | 2026 |
| Midas Display Systems Ltd | Builders | NP44 1TS | 2002 |
| Mito Developments (Sw) Ltd | Builders | NP44 7HB | 2018 |
| Morspan Construction Ltd | Builders | NP44 3AB | 2006 |
| Msh Building Ltd | Builders | NP44 5BB | 2007 |
| N G Construction Ltd | Builders | NP44 3AU | 2003 |
| Nicole-Rose Commercial Interiors Ltd | Builders | NP18 2EH | 2022 |
| Olerenshaw Home Improvements Services Ltd | Builders | NP44 7JN | 2023 |
| Outdoor Innovations- Alan and Nicola Ltd | Builders | NP44 2LR | 2025 |
| P&G Tm Services Ltd | Builders | NP44 2EH | 2025 |
| P.B.S. (South Wales) Ltd | Builders | NP18 2AE | 2002 |
| Pa Rebar Ltd | Builders | NP44 1SG | 2017 |
| Pearwood Developments Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Group Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Maintenance Ltd | Builders | NP44 5TQ | 2024 |
| Pearwood Projects Ltd | Builders | NP44 5TQ | 2021 |
| Pelle Groundworks Ltd | Builders | NP44 3AB | 2024 |
| Pencoed Reinforcements Ltd | Builders | NP44 5AY | 2004 |
| Pendragon (Design & Build) Ltd | Builders | NP44 1AJ | 1984 |
| Protectahome Building Solutions Ltd | Builders | NP18 2LH | 2011 |
| Protectahome Ltd | Builders | NP18 2LH | 1980 |
| Pure Sealants Ltd | Builders | NP44 7AD | 2026 |
| R Senior & Son Ltd | Builders | NP44 3AU | 2004 |
| Risca Developments Ltd | Builders | NP44 3AB | 2019 |
| Rje Construction and General Builders Ltd | Builders | NP44 3AB | 2023 |
| Rme Property Investments Ltd | Builders | NP44 8SR | 2024 |
| Rogerstone Landscaping & Driveways Ltd | Builders | NP44 7UT | 2017 |
| S2 Construction Services Ltd | Builders | NP44 1SE | 2017 |
| Sealant Applications (Cymru) Ltd | Builders | NP44 8SR | 2010 |
| Shackleton Fox Developments Ltd | Builders | NP18 2DQ | 2023 |
| Skyscrapers Building Services Ltd. | Builders | NP18 3SB | 2018 |
| Smart Energy Business Ltd | Builders | NP44 3AB | 2023 |
| Sml Trade Services Ltd | Builders | NP44 5TU | 2026 |
| Snkd Brickwork Ltd | Builders | NP18 2NB | 2019 |
| Sonas Holdings Hereford Ltd | Builders | NP44 3AU | 2015 |
| South Wales Concrete Pumping Ltd | Builders | NP44 5BH | 2012 |
| South Wales Screeding Services Ltd | Builders | NP44 5BH | 2013 |
| South West Maintenance Services Ltd | Builders | NP18 2DU | 2008 |
| Southern Linings Ltd | Builders | NP44 5AZ | 2005 |
| Steven Magor and Son Paving Services Ltd | Builders | NP44 5UT | 2023 |
| T.C Building & Maintenance Ltd | Builders | NP44 4DZ | 2022 |
| Thames Valley Construction Services Ltd | Builders | NP44 3AF | 2018 |
| The Clic It Group Ltd | Builders | NP44 3QG | 2022 |
| Tmda Services Ltd | Builders | NP44 3FQ | 2022 |
| Trg Groundworks Civil Engineering Ltd | Builders | NP44 7JD | 2022 |
| Trinity Design & Build (Wales) Ltd | Builders | NP18 2JX | 2014 |
| True Level Concrete Ltd | Builders | NP44 2LQ | 2026 |
| Tsg Mechanical Ltd | Builders | NP44 7EZ | 2012 |
| Ty Parc Construction Ltd | Builders | NP18 1JL | 2022 |
| UK Wood Business Ltd | Builders | NP44 7NX | 2021 |
| Verati Design & Build Ltd | Builders | NP44 1AE | 2026 |
| Volts Training and Specialist Services Ltd | Builders | NP44 6JF | 2024 |
| Walter Robyn Properties Ltd | Builders | NP18 2LE | 2014 |
| Waterproofing Specialist Ltd | Builders | NP18 2LH | 2011 |
| Webberts Ltd | Builders | NP44 2EG | 2025 |
| Wizard Eco Ltd | Builders | NP18 1AA | 2022 |
| Wizsco Ltd | Builders | NP18 1AA | 2024 |
| Woodrise Access Ltd | Builders | NP44 1JZ | 2020 |