| Push 4 AV Investments Limited | Professional & scientific | 2014 |
| PUSH4 Audio Visual Limited | Administrative & support | 2008 |
| Pwll Property Ltd | Real estate | 2021 |
| PWP Consulting Limited | Professional & scientific | 2021 |
| QBS Solutions (UK) Ltd | Other services | 2013 |
| Quality Tradesman Ltd | Construction | 2015 |
| Quant and Eco Consulting Ltd | Information & communication | 2016 |
| R & a Farming Ltd | Agriculture & fishing | 2020 |
| R & M Pallets Limited | Manufacturing | 2023 |
| R & T Fabrications Limited | Manufacturing | 2002 |
| R Llewellyn Groundworks Ltd | Construction | 2021 |
| R M Asset Management Ltd | Financial services | 2018 |
| R S Property Management (Caerphilly) LLP | | 2015 |
| R T S E W Ltd | Education | 2020 |
| R&Gc Ltd | Health & social care | 2023 |
| R.S.Bird Limited | Real estate | 1927 |
| RA and CJ Consulting Ltd | Professional & scientific | 2012 |
| Radio Carmarthenshire Limited | Information & communication | 2002 |
| Radio Ceredigion Limited | Information & communication | 2010 |
| Radio EXE Ltd | Information & communication | 2005 |
| Ragan Property Limited | Real estate | 2020 |
| Ragmi Labs Ltd | Information & communication | 2000 |
| Rainbird Enterprises Ltd | Arts & recreation | 2017 |
| Rainbow Polymer Sorting Ltd | Manufacturing | 2025 |
| Rapid Van Rentals Limited | Wholesale & retail | 2022 |
| Rarityuk Ltd | Wholesale & retail | 2026 |
| RAW Elements Marketing LLP | | 2023 |
| RBD Enterprises Limited | Manufacturing | 1990 |
| Rdbd Ltd | Health & social care | 2019 |
| Real Merch Limited | Wholesale & retail | 2012 |
| Recliner Chair Centre Limited | Wholesale & retail | 2003 |
| Red Dragon Training & Consultancy Ltd | Education | 2016 |
| Red Top Media Productions Limited | Information & communication | 2022 |
| Rees Contractors Limited | Construction | 2019 |
| Relcor Limited | Manufacturing | 1986 |
| Renata Group Limited | Financial services | 2023 |
| Render Group Ltd | Administrative & support | 2025 |
| Render Shop Limited | Extraterritorial | 2026 |
| Render Wash Limited | Extraterritorial | 2026 |
| Replan (Holdings) Limited | Financial services | 2024 |
| Replan Limited | Real estate | 1950 |
| Repsar Ltd | Professional & scientific | 2023 |
| Return & Earn Ltd | Extraterritorial | 2018 |
| Revs Tyre and Auto Centre Ltd | Wholesale & retail | 2018 |
| Rich Media Limited | Professional & scientific | 2018 |
| Richard Couzens Machinery Limited | Wholesale & retail | 2007 |
| River Mews Management Ltd | Real estate | 2022 |
| RJ Developments & SON Ltd | Construction | 2013 |
| RJ Financial Management Ltd | Financial services | 2026 |
| RLS Consultancy Limited | Professional & scientific | 2016 |
| Roath Limited | Information & communication | 2010 |
| Roberts Trade Limited | Transport & logistics | 2016 |
| Robhel Ltd. | Construction | 1989 |
| Rockabill Holdings Limited | Real estate | 2025 |
| Rodstation Limited | Manufacturing | 2014 |
| Ronan Williams Limited | Information & communication | 2022 |
| Rose Equine Ltd | Agriculture & fishing | 2024 |
| Roundstone Productions Limited | Information & communication | 2019 |
| Royle Taverns Limited | Hospitality | 2003 |
| RPM Connections Ltd | Construction | 2014 |
| Rpsf Limited | Real estate | 2019 |
| Ruby Residential Properties Ltd | Real estate | 2022 |
| Ruperra Properties Limited | Administrative & support | 2022 |
| Rushmoor Ltd | Construction | 2021 |
| Russell Heath Accountants Limited | Professional & scientific | 2003 |
| Rustproofing Limited | Wholesale & retail | 2022 |
| Ryan Investment Limited | Financial services | 2020 |
| RYC Penfro CYF | Extraterritorial | 2014 |
| Ryder Management Agency Ltd | Arts & recreation | 2019 |
| S Brifcani Ltd | Health & social care | 2013 |
| Saddle Central Ltd | Wholesale & retail | 2025 |
| Saff 14 Ltd | Wholesale & retail | 2013 |
| Salix Babylonica Medical Services Limited | Health & social care | 2024 |
| Sara Powell Legal Consultancy Ltd | Professional & scientific | 2025 |
| Save Project Services Ltd | Professional & scientific | 2025 |
| Scorpion Martial Arts Limited | Education | 2015 |
| Scorpion Modern Martial Arts Ltd | Education | 2026 |
| Scratch 22 Ltd | Wholesale & retail | 2018 |
| Screaming NET Limited | Professional & scientific | 2018 |
| SD Data Services Limited | Energy | 2013 |
| Sebrox Limited | Information & communication | 2001 |
| Second Escape Games Ltd | Manufacturing | 2026 |
| Select Equine Sales SW Ltd | Agriculture & fishing | 2025 |
| Seren Popi Jewellery Limited | Manufacturing | 2024 |
| Sevco 1105 Limited | Households | 1999 |
| Seventh House Ltd | Professional & scientific | 2020 |
| Severn Risk Management Ltd | Financial services | 2019 |
| Sharp Edges Custom Ltd | Manufacturing | 2023 |
| Sharp Equine Ltd | Agriculture & fishing | 2019 |
| Shcce Ltd | Construction | 2015 |
| Shor-Line Limited | Manufacturing | 1985 |
| Shwsh Limited | Information & communication | 2020 |
| Sifira 6 Promotions Limited | Arts & recreation | 2008 |
| Sigma Quality 42 Ltd | Professional & scientific | 2007 |
| Simon P. White Limited | Health & social care | 2008 |
| Site Serv Limited | Water & waste | 2021 |
| Site-Serv (Midlands) Limited | Administrative & support | 2002 |
| Siteserv Recycling (SW) Limited | Water & waste | 2006 |
| Siteserv Recycling Holding Company Limited | Water & waste | 2015 |
| SJB Car Sales Ltd | Wholesale & retail | 2007 |