| MS (Caerphilly) Limited | Manufacturing | 2007 |
| MT Commercial Consulting Limited | Professional & scientific | 2013 |
| Mulberry Habitat (Trowbridge) Ltd | Real estate | 2017 |
| Mytilus Limited | Mining & quarrying | 2017 |
| Nail Grace Limited | Other services | 2017 |
| Nakuta Architects Ltd | Professional & scientific | 2025 |
| Nashoak Properties Limited | Real estate | 1989 |
| Nataliya Locum Limited | Health & social care | 2019 |
| New Road Stores Ltd | Wholesale & retail | 2026 |
| Nice Bunch Weddings Limited | Wholesale & retail | 2022 |
| Noah’S Pantry Ltd | Wholesale & retail | 2021 |
| Nooboo Services Ltd | Administrative & support | 2018 |
| Normans Media Limited | Information & communication | 2009 |
| North 8TH Ltd | Information & communication | 2023 |
| Nutmeg Investments Limited | Professional & scientific | 2004 |
| O' Kane Estates Limited | Construction | 1996 |
| One Blue Marble Limited | Professional & scientific | 2018 |
| One Step Beyond Consulting Limited | Professional & scientific | 2025 |
| Orchard House Property Co Ltd | Real estate | 2022 |
| Otrera Training Limited | Other services | 2021 |
| P & R Morris Limited | Households | 2005 |
| Palmer & Co 44 Ltd | Construction | 2023 |
| Paper Dragon Design Limited | Information & communication | 2015 |
| Parasol Partners Ltd | Real estate | 1999 |
| Parkfield Osteopaths and the Wellbeing Space Limited | Health & social care | 2024 |
| Parking & Storage Solutions (South West) LLP | | 2010 |
| Parmac Developments Limited | Construction | 2017 |
| Paul Brason Limited | Arts & recreation | 2013 |
| PB3 Ltd | Professional & scientific | 2026 |
| Penny Brown Consulting Limited | Professional & scientific | 2012 |
| Perfect Electricals Limited | Construction | 2020 |
| Peugeot Saveurs United Kingdom Limited | Wholesale & retail | 2020 |
| Pick OUR Brains Ltd | Professional & scientific | 2020 |
| Piha Limited | Wholesale & retail | 2013 |
| Pinchwood Ltd. | Real estate | 2013 |
| Pitch Perfect Music Solutions Ltd | Professional & scientific | 2023 |
| Plumbing 194 Ltd | Construction | 2007 |
| Plumbing and Heating for YOU Ltd | Construction | 2020 |
| PM & J Properties Ltd | Real estate | 2022 |
| Poetry in Translation Ltd | Information & communication | 2025 |
| Pogo KID Limited | Information & communication | 2012 |
| Pookie Bros Ltd | Hospitality | 2026 |
| Pottery Palette Ltd | Wholesale & retail | 2024 |
| Press Studio Ltd | Professional & scientific | 2023 |
| Preston Leigh Management Company Limited | Households | 2022 |
| PRM Consultants Ltd | Construction | 2026 |
| Prometheus Concept Ltd | Manufacturing | 2018 |
| Proserv PR Limited | Professional & scientific | 2007 |
| Punk Burgers Ltd | Hospitality | 2022 |
| Quick Plant & Groundworks Ltd | Construction | 2016 |
| Rachelwherever Ltd | Other services | 2013 |
| Raymond GEE Investments Limited | Real estate | 1963 |
| Reach.Io Ltd | Information & communication | 2021 |
| Red Gecko Consulting Ltd | Professional & scientific | 2019 |
| Red House Design Ltd | Professional & scientific | 2019 |
| Redomus Limited | Professional & scientific | 2026 |
| Reed Jones Holding Limited | Professional & scientific | 2024 |
| Reimagine Solutions Group Limited | Information & communication | 2024 |
| Renewable Power Consulting Ltd | Professional & scientific | 2007 |
| Resolve Structures Limited | Professional & scientific | 2024 |
| Resonant Collaboration Youth Safeguarding Limited | Professional & scientific | 2025 |
| Richmond Hill Enterprises Ltd | Information & communication | 2022 |
| Richmonde Laine Financial Services Ltd | Extraterritorial | 2010 |
| Richmonde Laine Wealth Management Ltd | Financial services | 2004 |
| Ripe Wines Ltd | Wholesale & retail | 2024 |
| Rock Giants Ltd | Arts & recreation | 2026 |
| Rockett Design Ltd | Real estate | 2020 |
| Rodden Limited | Wholesale & retail | 2024 |
| Rudge Homes Ltd | Construction | 2020 |
| Rule the Game Football Coaching Ltd | Health & social care | 2025 |
| Rummage Studio Ltd | Professional & scientific | 2024 |
| Safe and Sound Wiltshire LLP | | 2012 |
| Saint Katherine's Quay Limited | Households | 1994 |
| Saltford Civil Engineering Ltd | Professional & scientific | 2013 |
| Sarah Nelson Interiors Ltd | Manufacturing | 2004 |
| Satellite 10 Ltd | Professional & scientific | 2013 |
| Savour Inns Ltd | Hospitality | 2023 |
| Savour Meats Ltd | Manufacturing | 2025 |
| SB3 Limited | Professional & scientific | 2012 |
| SD Hospitality Management Ltd | Hospitality | 2023 |
| Sealpipe Limited | Manufacturing | 1990 |
| Security 2000 Limited | Administrative & support | 1994 |
| Serious Solutions Ltd | Construction | 2017 |
| Seven Shed Communications Limited | Professional & scientific | 2024 |
| Sgts Holdings Limited | Financial services | 2020 |
| Shapeshiftstudios Ltd | Arts & recreation | 2025 |
| Ship House Management Company Limited | Real estate | 2016 |
| Showby Ltd | Information & communication | 2023 |
| Sianrobmusic CIC | Arts & recreation | 2022 |
| Silver Sky Property Solutions Ltd | Real estate | 2018 |
| Silver Sky Serviced Accomodation Ltd | Real estate | 2020 |
| Simon Ringham Ltd | Professional & scientific | 2020 |
| Sims Hilditch Limited | Professional & scientific | 2010 |
| Sires Property Management Limited | Real estate | 2020 |
| Smart Learning Technologies Ltd | Education | 2023 |
| Smart Realisations Limited | Hospitality | 2021 |
| Smarter Automation Limited | Professional & scientific | 2013 |
| Snappertuna Limited | Wholesale & retail | 2023 |
| SNL Advisory Ltd | Professional & scientific | 2021 |
| Solenne Solutions Limited | Professional & scientific | 2026 |