| R a L Electrical Services Limited | Construction | 2013 |
| R P Noyes Limited | Construction | 2013 |
| R Taxi Limited | Transport & logistics | 2021 |
| R&Kpubco Ltd | Hospitality | 2026 |
| R.H.W. Engineering Limited | Manufacturing | 2001 |
| Radcliffe Fire Protection Ltd | Administrative & support | 2010 |
| Radcot Bridge LLP | | 2017 |
| Rafflers Limited | Arts & recreation | 2022 |
| Rainbow KOI Ltd | Wholesale & retail | 2025 |
| Rainbow Property Cleaning Services Ltd | Administrative & support | 2025 |
| Rajpoot Indian Ltd | Hospitality | 2020 |
| Raspro Services Ltd | Real estate | 2026 |
| RCA Living Ltd | Real estate | 2022 |
| RCD Support Services (Wilts) Limited | Administrative & support | 2014 |
| Rebr Ltd | Hospitality | 2021 |
| Red Seven Consultancy Limited | Professional & scientific | 2016 |
| Redhorn Holdings Limited | Real estate | 2005 |
| Rembrook Developments Limited | Wholesale & retail | 1988 |
| Restorative Engagement Forum Ltd | Professional & scientific | 2014 |
| Retail Trader Solutions Ltd | Education | 2022 |
| Revival Business Group Ltd | Wholesale & retail | 2019 |
| RF Builders Limited | Construction | 2017 |
| RF Electrical & Mechanical Services Ltd | Construction | 2018 |
| RH Paraplanning Consultancy Ltd | Financial services | 2024 |
| Rich Kelloway Ltd | Information & communication | 2014 |
| Richard G Wiltshire Limited | Construction | 1996 |
| Rieber (UK) Limited | Wholesale & retail | 1995 |
| Rigg Construction (Southern) Limited | Construction | 1988 |
| Rigg Construction Holdings Limited | Financial services | 2016 |
| Riley's Crane Hire Limited | Construction | 2004 |
| Ripplecore Limited | Information & communication | 2025 |
| River Power Limited | Energy | 2006 |
| Riverside MOT Ltd | Wholesale & retail | 2008 |
| RJS Property Services Ltd | Construction | 2016 |
| RM Consulting Group Ltd | Professional & scientific | 2020 |
| RM Trading Group Ltd | Wholesale & retail | 2019 |
| RMB Landscaping Ltd | Agriculture & fishing | 2025 |
| Road Runner Car Repairs Ltd | Real estate | 2019 |
| Roadrunner Vehicle Repairs Limited | Wholesale & retail | 2009 |
| Roaring Spirit Collective Limited | Other services | 2023 |
| ROB Bailey Electrical Installations Limited | Construction | 2015 |
| Robert Fleming Masonry and Conservation Limited | Construction | 2005 |
| Robert Opie Trading Company Limited | Extraterritorial | 1991 |
| Robin Commercial Services Ltd | Professional & scientific | 2025 |
| Robinsons Traditional Fish and Chips (Melksham) Limited | Hospitality | 2019 |
| Robinsons Traditional Fish and Chips Limited | Real estate | 2011 |
| Rocky Holdings Limited | Financial services | 2016 |
| Rogue Penguin Ltd | Information & communication | 2019 |
| Roman City Property Management Limited | Real estate | 2017 |
| Rosemont Ventures Limited | Real estate | 2023 |
| Rotherfield Homes & Gardens Ltd | Construction | 2021 |
| Roundstone Catering Equipment Limited | Wholesale & retail | 1982 |
| Roundstone Rentals Limited | Real estate | 2025 |
| Rowmont Holdings Limited | Financial services | 2024 |
| Rubber & Plastic Profiles Co. Limited | Extraterritorial | 1999 |
| RVT International Limited | Transport & logistics | 2015 |
| S & R Clark Property Development Ltd | Real estate | 2025 |
| S and R Property Development Ltd | Real estate | 2025 |
| S Gillett Heating Services Ltd | Construction | 2022 |
| S Jacques Building Contractor Ltd | Construction | 2012 |
| S R Rudman Limited | Construction | 2002 |
| S W Motor Services Limited | Wholesale & retail | 2016 |
| Safety Person Limited | Public administration | 2017 |
| SALTIRE360 Ltd. | Professional & scientific | 2022 |
| Samuel Maddock Limited | Health & social care | 2010 |
| Sandridge Design Group Ltd | Manufacturing | 2021 |
| Sandridge Stone Ltd | Manufacturing | 2018 |
| Sarafan Sports Ltd | Arts & recreation | 2009 |
| Sash Windows Specialists Ltd | Manufacturing | 2020 |
| Savesomegreen Ltd | Wholesale & retail | 2008 |
| Sbrc Spares Ltd | Wholesale & retail | 2018 |
| Scadd Limited | Professional & scientific | 1998 |
| Scanning Pens Holdings Ltd | Professional & scientific | 2002 |
| Scanning Pens Ltd | Wholesale & retail | 2003 |
| Schafer Partnership Limited | Information & communication | 2014 |
| Scottie Wilks Art Limited | Arts & recreation | 2022 |
| SCP Properties Ltd | Construction | 2025 |
| SDR Kits Limited | Wholesale & retail | 2013 |
| SDR Projects Limited | Wholesale & retail | 2021 |
| Seagull UK Holdings Limited | Financial services | 2024 |
| Seend Car Leasing Limited | Administrative & support | 2024 |
| Seend Community Land and Asset Trust CIC | Construction | 2018 |
| Seend Images Ltd | Information & communication | 2019 |
| SEJ Logistics Ltd | Transport & logistics | 2026 |
| Selfloor Limited | Construction | 2004 |
| Sensuelle Limited | Extraterritorial | 1999 |
| Sethart Ltd. | Manufacturing | 2021 |
| Sevarra Limited | Wholesale & retail | 2026 |
| SH & EH Holdings Limited | Financial services | 2026 |
| SHAHID448 Limited | Wholesale & retail | 2025 |
| Shaun Noyes Furniture Limited | Manufacturing | 2012 |
| Sherston Property Services Ltd. | Administrative & support | 1997 |
| Shiftd Clothing Ltd | Wholesale & retail | 2024 |
| Shinepress Limited | Real estate | 1998 |
| Shiners Commercial Ltd | Water & waste | 2013 |
| Shiners Express Limited | Administrative & support | 2005 |
| Shoots Juice Cafe Ltd | Hospitality | 2024 |
| Sign of the Angel (Lacock) Limited | Hospitality | 2014 |
| Signal Automotive Services Ltd | Wholesale & retail | 2017 |
| Silly Waiters Ltd | Arts & recreation | 2025 |