| Randle Investment Company Limited | Financial services | 2021 |
| Randle Property Limited | Real estate | 2016 |
| Random Digit Limited | Information & communication | 2011 |
| Ranelly Management Company Limited | Households | 1984 |
| Ransom Building Services Limited | Construction | 2016 |
| RB Electrical and Renewables Ltd | Construction | 2023 |
| RC Product Ltd | Extraterritorial | 2025 |
| RCS Racing Ltd | Extraterritorial | 2022 |
| RD Property Services Ltd | Real estate | 2023 |
| Realising Systems Ltd | Information & communication | 2011 |
| Reality Global Limited | Information & communication | 1998 |
| Reality Group Ltd | Financial services | 2022 |
| Reallycare CIC | Information & communication | 2011 |
| Recruitment Rebellion Ltd | Administrative & support | 2020 |
| Red ARK Trading Ltd | Wholesale & retail | 2023 |
| Red Garfish Ltd | Hospitality | 2025 |
| Red Rufus Limited | Wholesale & retail | 2011 |
| Redcan Films Limited | Information & communication | 2014 |
| Redsalt Limited | Professional & scientific | 2026 |
| Regsaas Ltd | Information & communication | 2021 |
| Relativity Limited | Information & communication | 1995 |
| Relish Bar Grill Ltd | Hospitality | 2025 |
| Remind Training Ltd | Education | 2024 |
| Renews Limited | Information & communication | 2002 |
| Renovastra Ltd | Real estate | 2026 |
| Replay Software Limited | Information & communication | 2022 |
| Resin Bonded Limited | Manufacturing | 2003 |
| Resolute Martial Arts Ltd | Arts & recreation | 2023 |
| Retail Security Services Ltd | Administrative & support | 2022 |
| Revolution Rendering Ltd | Construction | 2022 |
| Revroc Consultancy Limited | Professional & scientific | 2024 |
| REX Limited | Manufacturing | 2019 |
| REX Vehicles Limited | Manufacturing | 2023 |
| Rexstone Builders Limited | Construction | 1999 |
| Richard & Associates Limited | Real estate | 2012 |
| Richard Green Funeral Service Limited | Other services | 2023 |
| Richardson (Europe) Limited | Professional & scientific | 2001 |
| Richardson Sales Performance UK Ltd | Other services | 2018 |
| Richlas Productions Ltd | Information & communication | 2020 |
| Ridgewood Design Ltd | Information & communication | 2015 |
| Ridgewood House Limited | Health & social care | 1993 |
| Ridgewood Stores Ltd | Wholesale & retail | 2020 |
| Ridley Inns Holdings Limited | Financial services | 2019 |
| Ridley Inns Limited | Hospitality | 2014 |
| Ridley Taverns Limited | Hospitality | 2019 |
| Ritelands Property Company Limited | Real estate | 2002 |
| Ritestone Property Co. Limited | Real estate | 1986 |
| River Dragon Ltd | Real estate | 2015 |
| Riverbank Walk (Uckfield) Limited | Households | 2020 |
| RNB Forestry Ltd | Agriculture & fishing | 2021 |
| RNR Tech Solutions Ltd | Information & communication | 2018 |
| Robert Butler (UK) Limited | Financial services | 2005 |
| Rolaren Consultancy Limited | Administrative & support | 2023 |
| Rolling Bulldog Ltd | Information & communication | 2020 |
| RON Gibson Properties Ltd | Real estate | 2020 |
| Rose GAS Limited | Wholesale & retail | 2008 |
| Rosehill Marketing Ltd | Manufacturing | 2013 |
| Ross Marketing Ltd | Professional & scientific | 2024 |
| Roston Technical Limited | Information & communication | 2018 |
| Rosyl Limited | Real estate | 2001 |
| Rotberg Automotive Ltd | Financial services | 2024 |
| Rotherfield Roofing Limited | Construction | 2023 |
| Rotherweald Management Limited | Real estate | 1995 |
| Rothman&Roman Europe Ltd | Financial services | 2024 |
| Routine Development Limited | Professional & scientific | 2007 |
| Rowland Williams Limited | Construction | 2020 |
| Royce Parker Developments (UK) Ltd | Real estate | 2002 |
| RS Design Ltd | Construction | 2021 |
| Rubiklab Ltd | Information & communication | 2022 |
| Ruby Eden Limited | Wholesale & retail | 2021 |
| Rubywise Services Limited | Other services | 2019 |
| Russlucy Cleaning & Maintenance Services Ltd | Administrative & support | 2023 |
| Rustic Rose Property Ltd | Real estate | 2024 |
| Ryan Construction Solutions Ltd | Construction | 2020 |
| Ryanventura Ltd | Information & communication | 2008 |
| Rylatt Chubb LLP | | 2014 |
| Ryma Holdings Limited | Professional & scientific | 2023 |
| S L Collins Consulting Limited | Professional & scientific | 2017 |
| S W Carpentry and Joinery Limited | Construction | 2014 |
| S&Sz Consulting-Uk Ltd. | Financial services | 2018 |
| S.J.R. Hydraulic Hoses Ltd. | Wholesale & retail | 1999 |
| Safis EVO Ltd. | Financial services | 2025 |
| Safton Properties Limited | Real estate | 2002 |
| Saker International Ltd | Construction | 2009 |
| Salar Consulting Limited | Professional & scientific | 2020 |
| Sales Lift Specialists Limited | Administrative & support | 2023 |
| Sales System Team Ltd | Wholesale & retail | 2011 |
| Sales Wise Limited | Wholesale & retail | 2015 |
| Salter Advisory Ltd | Professional & scientific | 2025 |
| SAM Millar Fabrication Ltd | Manufacturing | 2015 |
| SAM Osmond Ltd | Professional & scientific | 2018 |
| Samedaytherapist Limited | Health & social care | 2013 |
| Sanchos Planet Ltd | Hospitality | 2019 |
| Sassan Panahinejad Limited | Information & communication | 2014 |
| Saunders Ltd | Agriculture & fishing | 2015 |
| Sawnr Ltd | Construction | 2025 |
| SBG Webdesign Ltd | Information & communication | 2014 |
| Scandismile Ltd | Health & social care | 2026 |
| Scarecrow Aviation Limited | Professional & scientific | 2016 |
| Scarecrow Bio-Acoustic Systems Limited | Extraterritorial | 2005 |