| ROB Cole Limited | Agriculture & fishing | 2003 |
| ROB Jones Urology Ltd | Health & social care | 2019 |
| Robcar Services Limited | Professional & scientific | 2023 |
| Robert Barons Ltd | Construction | 2014 |
| Robert Hawker Venison Limited | Manufacturing | 2012 |
| Roberts Audio Solutions Ltd | Wholesale & retail | 2017 |
| Robertson Fire & Security Ltd | Administrative & support | 2023 |
| Robin's Garden Limited | Administrative & support | 2014 |
| Robinson Property Investments Ltd | Real estate | 2018 |
| Robinson's Holidays Limited | Transport & logistics | 2015 |
| Roborough Properties Limited | Real estate | 2007 |
| ROC Agri Limited | Wholesale & retail | 2011 |
| Roche Energy Supplies Limited | Real estate | 2021 |
| Rock Projects (SW) Ltd | Construction | 2008 |
| Rockeagle Law Ltd | Professional & scientific | 2024 |
| Rocketendonars Ltd | Health & social care | 2023 |
| Rockman Properties Limited | Real estate | 2016 |
| Rockman Resources Limited | Financial services | 2019 |
| Rockmount Air Limited | Manufacturing | 2019 |
| Rockwell Gate Management Company Limited | Households | 2002 |
| Rockwell Print and Sign Ltd. | Manufacturing | 2019 |
| Roest Crollius DE Jong Advocaten LLP | | 2015 |
| Roff Financial Ltd | Financial services | 2022 |
| Roger Burton Ltd | Wholesale & retail | 2017 |
| Roger Rich & Co. Limited | Other services | 2017 |
| Rogers Car Repairs Ltd | Wholesale & retail | 2013 |
| Rohia Belvedere Court Freehold Ltd | Real estate | 2023 |
| Rohia Developments Ltd | Construction | 2018 |
| Rohia Homes Ltd | Construction | 2019 |
| Rohia House Ltd | Real estate | 2019 |
| Rohia Leasehold Holdings Ltd | Real estate | 2024 |
| Rohia Ltd | Real estate | 2017 |
| Roket Business Solutions Ltd | Professional & scientific | 2014 |
| Roket Management Services Ltd | Professional & scientific | 2014 |
| Roket Performance Coatings Ltd | Construction | 2021 |
| Roket Property Services Ltd | Construction | 2014 |
| Rolamstone Limited | Real estate | 1999 |
| Romanian Orthodox Community Support Somerset CIC | Education | 2026 |
| Rompu Limited | Professional & scientific | 2018 |
| Ronnies Groundworks Limited | Construction | 2024 |
| Roofer South West Limited | Construction | 2015 |
| Rookery Manor Limited | Hospitality | 2018 |
| Rookery Manor Lodges Limited | Real estate | 2018 |
| Rookwood Services Ltd | Professional & scientific | 2023 |
| Room One Developments Ltd | Construction | 2020 |
| Roovolt SEO Ltd | Professional & scientific | 2025 |
| ROS Farming Ltd | Agriculture & fishing | 2022 |
| Roscoliz Ltd Limited | Health & social care | 2023 |
| Rose & Portcullis Ltd | Hospitality | 2011 |
| Rosebery Avenue Management Company Limited | Households | 1987 |
| Rosebrook Consultancy Limited | Information & communication | 2005 |
| Rosewill Properties Limited | Real estate | 2019 |
| Rosewood Systems Limited | Information & communication | 1988 |
| Ross Aerospace Ltd | Professional & scientific | 2024 |
| Ross COX Plumbing & Heating Limited | Construction | 2006 |
| Ross COX Property Holdings Ltd | Real estate | 2024 |
| Ross Hunter Ltd | Professional & scientific | 2024 |
| Rotec Holdings Limited | Professional & scientific | 2007 |
| Rotec Hydraulics Limited | Manufacturing | 1979 |
| Rotor Pixel Ltd | Manufacturing | 2019 |
| Rougemont (Exeter) Limited | Construction | 2020 |
| Round Oak Commercials Ltd | Wholesale & retail | 2018 |
| Roundwood Farm Ltd | Agriculture & fishing | 2019 |
| Rouwenhoff Beheer Limited | Professional & scientific | 2008 |
| Rowan Tree Projects Limited | Professional & scientific | 2024 |
| Rowandeck Limited | Real estate | 2001 |
| Rowcliffe Holdings Limited | Real estate | 1996 |
| Rowles Davis Ltd | Professional & scientific | 2013 |
| Rowley Farm Limited | Agriculture & fishing | 2026 |
| ROY ALL Flooring Limited | Wholesale & retail | 2019 |
| Royal Wharf Vets Ltd | Professional & scientific | 2026 |
| Rpsg Family Holdings Ltd | Professional & scientific | 2023 |
| Rpsg Holdings Ltd | Professional & scientific | 2023 |
| Rqmf Ltd | Other services | 2019 |
| RS Sound Ltd. | Information & communication | 2008 |
| RSL (Bristol) Limited | Manufacturing | 1994 |
| RT33 Limited | Agriculture & fishing | 2017 |
| Rtat Holdings Limited | Financial services | 2003 |
| Rtcdef Ltd | Financial services | 2025 |
| Ruay Thai Ltd | Wholesale & retail | 2018 |
| Rubicon Classic Enterprises Ltd | Arts & recreation | 2007 |
| Ruby Care Limited | Hospitality | 2014 |
| Ruby Red Financial Planning Ltd | Financial services | 2019 |
| Rudi Golba Limited | Information & communication | 2011 |
| Ruffle Properties Limited | Administrative & support | 2020 |
| Rugs R US Ltd | Wholesale & retail | 2024 |
| Ruish Cross Woodards Apartments Management Limited | Households | 2004 |
| Rumbelow Business Solutions Ltd | Information & communication | 2014 |
| Rumitechs Limited | Agriculture & fishing | 2019 |
| Rumwell Hall Limited | Real estate | 2010 |
| Rumwell Ltd | Extraterritorial | 2015 |
| Rundle & Wakeham Limited | Professional & scientific | 2014 |
| Runmaka VR Ltd | Information & communication | 2023 |
| Runmore Ltd | Construction | 2018 |
| Running FOX Limited | Professional & scientific | 2018 |
| Rural and Sporting Services Limited | Professional & scientific | 2011 |
| Rural Health Compass Limited | Professional & scientific | 2023 |
| Russ Finn Associates Ltd | Administrative & support | 2014 |
| Russell-Spencer Ltd | Information & communication | 2022 |
| Russet Copse (Sandford) Management Company Limited | Households | 2019 |