| Pritsimm Ltd | Real estate | 2010 |
| Property DM Ltd | Construction | 2026 |
| Property MP Ltd | Real estate | 2024 |
| PS Maesteg LLP | | 2022 |
| Pulsating Properties Ltd | Real estate | 2022 |
| Pulse-Pr Ltd | Information & communication | 2007 |
| QBZ MH Ltd | Hospitality | 2023 |
| QZ HW Ltd | Hospitality | 2026 |
| R&R Roofing Ltd | Construction | 2025 |
| R&R Traderz Ltd | Wholesale & retail | 2024 |
| Razzle Events Ltd. | Arts & recreation | 2025 |
| RDC Pallet Truck Services Ltd. | Manufacturing | 2013 |
| Rdr-Enterprises Ltd | Wholesale & retail | 2025 |
| React 2 Training Ltd | Education | 2011 |
| Resultsbyrio Ltd | Professional & scientific | 2025 |
| Revamp Strength Limited | Arts & recreation | 2024 |
| Revival Bodyworks Ltd | Wholesale & retail | 2019 |
| RH Dinner Limited | Hospitality | 2022 |
| Right Price Building & Brickwork Limited | Construction | 2024 |
| Right Price Properties Limited | Real estate | 2024 |
| RJM Dairy Maesteg Ltd | Hospitality | 2020 |
| Robert Cole & Co Limited | Professional & scientific | 2007 |
| Robert Jackson Golf Ltd | Wholesale & retail | 2018 |
| Roberts Family Properties Ltd | Real estate | 2025 |
| ROO & Socks Bakery Ltd | Manufacturing | 2025 |
| Rose Burridge Training and Consultancy Ltd | Professional & scientific | 2008 |
| Rstl Developments Limited | Real estate | 2025 |
| Rstl Holdings Limited | Financial services | 2025 |
| Rugby Buckets Ltd | Manufacturing | 2024 |
| S E R Property 1 (UK) Ltd | Real estate | 2012 |
| Sabusparks Ltd | Professional & scientific | 2025 |
| Safeway Health, Safety and Training Solutions Ltd | Public administration | 2025 |
| SAM Weld Limited | Manufacturing | 2025 |
| Saunders & Co Hair Design Ltd | Other services | 2018 |
| SB Signature Property Ltd | Real estate | 2026 |
| SCS Property Renovations, Metal and Waste Ltd | Households | 2026 |
| Sdhill Consulting Limited | Information & communication | 2017 |
| Sema Elif Nutrition Ltd | Health & social care | 2020 |
| Seqm Training Ltd | Professional & scientific | 2021 |
| SES Building & Energy Solutions Limited | Construction | 2001 |
| SES Building (Holdings) Ltd | Financial services | 2021 |
| SH21 Ltd | Other services | 2018 |
| Siderise (Holdings) Limited | Professional & scientific | 1989 |
| Siderise (Special Products) Limited | Manufacturing | 1982 |
| Siderise Group Limited | Professional & scientific | 2016 |
| Siderise Insulation Limited | Manufacturing | 1989 |
| Siderise Limited | Other services | 1972 |
| SJM10B Limited | Professional & scientific | 2011 |
| Smartryhomez Ltd | Construction | 2026 |
| South Wales Miners Museum | Arts & recreation | 2003 |
| Spring Hills Limited | Manufacturing | 2019 |
| ST Voltage Ltd | Construction | 2024 |
| Star Heating and Building Contractors Ltd | Construction | 2003 |
| Stay & SEE Productions Ltd | Information & communication | 2025 |
| Step Back in Time Ltd | Wholesale & retail | 2024 |
| Stephens Maintenance Services Limited | Construction | 2014 |
| Suli 5 Ltd | Other services | 2023 |
| Swwi Composite, Gates & Railings Limited | Manufacturing | 2023 |
| Synerjetic Ventures Limited | Administrative & support | 2017 |
| Systems Group UK Limited | Professional & scientific | 1981 |
| Systems Pipework Limited | Manufacturing | 1972 |
| Systems Steam & Process Engineering Ltd | Manufacturing | 2016 |
| T&J Motocross Racing Limited | Wholesale & retail | 2017 |
| T3 Project Services Limited | Other services | 2019 |
| Talgarth Bakery Limited | Manufacturing | 1999 |
| Taspinar Catering Ltd | Hospitality | 2020 |
| Tcjdog Ltd | Transport & logistics | 2025 |
| Team a & MC Limited | Construction | 2013 |
| THE Bird Bar Limited | Hospitality | 2025 |
| THE Bird Irish Bar Ltd | Hospitality | 2026 |
| THE Bird Nightclub Limited | Hospitality | 2025 |
| THE DMK Holding Group Ltd | Households | 2021 |
| THE Fairways Maesteg Ltd | Hospitality | 2026 |
| THE Gamers' Emporium Limited | Wholesale & retail | 2012 |
| THE Hammer Industry’S Limited | Wholesale & retail | 2020 |
| THE Linepost Company Maesteg Limited | Manufacturing | 2012 |
| THE Personalised Party Shop Ltd | Manufacturing | 2021 |
| THE Railway Llan Ltd | Hospitality | 2025 |
| THE Treehouse Daycare Maesteg Limited | Health & social care | 2023 |
| Thermal Heating Supplies Limited | Wholesale & retail | 2021 |
| Think Smart Property Ltd | Real estate | 2025 |
| Thomassupplyco Ltd | Wholesale & retail | 2023 |
| Tiny Paws Ltd | Agriculture & fishing | 2021 |
| TJ & Jones CYF | Professional & scientific | 2024 |
| Total Gym Services Limited | Manufacturing | 2015 |
| TR Community Childcare Ltd | Health & social care | 2023 |
| Triple SIX Properties Limited | Real estate | 2024 |
| Triple SIX Property Maintenance Ltd | Construction | 2026 |
| TT Medical Academy Ltd | Education | 2026 |
| TT Medical Clinic Ltd | Health & social care | 2024 |
| Turboville Garage Maesteg Ltd | Wholesale & retail | 2026 |
| TY Newydd Electrical Ltd | Construction | 2019 |
| Unique Buy to LET Ltd | Real estate | 2023 |
| Unique Fitness Maesteg Limited | Arts & recreation | 2015 |
| Valley Cars Maesteg Ltd | Transport & logistics | 2023 |
| Valley Web Services Ltd | Information & communication | 2024 |
| Valleycats Ltd | Wholesale & retail | 2021 |
| Vartis Limited | Information & communication | 2004 |
| Verma Trading Ltd | Manufacturing | 2025 |
| Vesta Property Holdings Ltd | Real estate | 2026 |