| RG Paving & Landscaping Limited | Construction | 2018 |
| RGH Letting Ltd | Real estate | 2021 |
| RGH Management Ltd | Information & communication | 2020 |
| Rhino Developments Limited | Real estate | 2002 |
| Rhodes Music Group Ltd | Manufacturing | 2019 |
| Richards Marketing Services Limited | Wholesale & retail | 1978 |
| Richmond Velvet Limited | Real estate | 2019 |
| Riding Bipolar Ltd | Information & communication | 2022 |
| RIG Nation Touring Co. Limited | Construction | 2021 |
| Right to Roam Campervans Ltd. | Hospitality | 2018 |
| Rimmon Judaica Ltd | Wholesale & retail | 2017 |
| Ring Decorators Ltd | Construction | 2026 |
| RIO Coffee House Ltd | Hospitality | 2024 |
| Ripe and Chalvington Community Association CIC | Other services | 2023 |
| Ripe Nursery School Limited | Education | 2011 |
| Ripley Group Limited | Financial services | 2011 |
| Ripley Property Holdings Ltd | Real estate | 2018 |
| Ripleys Auto Spares Limited | Wholesale & retail | 1989 |
| Risepeak Ltd | Wholesale & retail | 2025 |
| Rislac Sussex Ltd | Real estate | 2021 |
| Riverford Consultants Ltd | Information & communication | 2014 |
| Rivertrace Engineering Limited | Manufacturing | 1983 |
| Rivertrace Limited | Manufacturing | 2016 |
| RJ Joinery Limited | Construction | 2018 |
| RJH Builders (South East) Ltd | Construction | 2016 |
| RJH Digital Ltd | Professional & scientific | 2018 |
| RJP Holdings (Sussex) Limited | Financial services | 2024 |
| RJS Property Investment Portfolio Limited | Real estate | 2019 |
| RLB Clothing Ltd | Manufacturing | 2025 |
| RMH Mental Health Ltd | Health & social care | 2025 |
| Road West Limited | Information & communication | 2010 |
| Roadtohealth Group Ltd | Financial services | 2002 |
| Robert Scott International (Professional Services) Limited | Professional & scientific | 2019 |
| Robin Lackford Motor Engineering Limited | Wholesale & retail | 2018 |
| Robins of Herstmonceux Limited | Wholesale & retail | 2002 |
| Rock Canvas Design Ltd | Manufacturing | 2024 |
| Rock Property Rentals Limited | Real estate | 2014 |
| Rocks Holdings Limited | Professional & scientific | 2018 |
| Rocky Bidco Limited | Administrative & support | 2019 |
| Rocky Holdco Limited | Administrative & support | 2019 |
| Rocky Interco 1 Limited | Administrative & support | 2021 |
| Rocky Interco 2 Limited | Administrative & support | 2021 |
| Rocky Midco Limited | Administrative & support | 2019 |
| Rocky Newco 2 Limited | Administrative & support | 2024 |
| Rocky Newco Limited | Administrative & support | 2021 |
| Rodgers Consultancy Services Limited | Information & communication | 2008 |
| Rodgers Services Ltd | Information & communication | 2023 |
| Rodwill Commercial Consultants Limited | Professional & scientific | 2015 |
| Roger Vine Ltd | Construction | 2012 |
| Roland Dunn Sales & Lettings Ltd | Real estate | 2007 |
| Rolvenden Holdings Limited | Financial services | 2020 |
| Romagabon Ltd | Construction | 2026 |
| Roman Bicycles Ltd | Wholesale & retail | 2023 |
| Romsey Close 1973 Limited | Extraterritorial | 2014 |
| Roof Fixings Ltd | Construction | 2017 |
| Rosan Reeves Auctions Limited | Other services | 2023 |
| Rosan Services Limited | Administrative & support | 2025 |
| Rosco Investments Limited | Real estate | 2025 |
| Rose Warren Ltd | Manufacturing | 2024 |
| Roskilde Holdings Limited | Financial services | 2025 |
| Rosslyn Road Limited | Real estate | 2018 |
| Rotherham Orthopaedics LLP | | 2026 |
| Rotwig-Luc Limited | Financial services | 2024 |
| Round the World Destinations Ltd | Administrative & support | 2021 |
| Rowfast Property Limited | Construction | 2013 |
| ROY Mills Furniture Limited | Manufacturing | 2012 |
| RPG Property & Lettings Limited | Real estate | 2025 |
| RSH Technologies Limited | Professional & scientific | 2008 |
| RTS Engineering (Sussex) Ltd | Transport & logistics | 1999 |
| RTW Brokers Limited | Financial services | 2015 |
| Rubon Mechanical Services Holdings Limited | Financial services | 2024 |
| Rubon Mechanical Services Limited | Construction | 2021 |
| Runger-Field Construction Limited | Construction | 2022 |
| Runners Lane Ltd | Wholesale & retail | 2026 |
| Rupert Coles Limited | Professional & scientific | 2020 |
| Rush Witt & Wilson Land and New Homes Ltd | Construction | 2019 |
| Rush, Witt & Wilson Lettings and Property Management Ltd | Real estate | 2026 |
| Ruth Oliver Limited | Real estate | 2020 |
| RYE Cutters Limited | Professional & scientific | 1989 |
| Ryves Holdings Limited | Financial services | 2024 |
| RZM Properties Ltd | Real estate | 2022 |
| S & D Banfield Limited | Professional & scientific | 2009 |
| S J Davies Medical Limited | Health & social care | 2018 |
| S J'S Hair Design Limited | Real estate | 2004 |
| S Jackman Services Limited | Professional & scientific | 2015 |
| S M Motors (East Sussex) Limited | Wholesale & retail | 2006 |
| S Manning & Sons Amusement World Limited | Arts & recreation | 2014 |
| S P L J Properties Ltd | Real estate | 2018 |
| S Wade Anaesthetic Services Limited | Health & social care | 2021 |
| S&G Design and Build LLP | | 2025 |
| S+R Painting and Decorating Limited | Construction | 2006 |
| S.G.Reed Plant Hire Limited | Construction | 2015 |
| S.J.M. Co.Uk Limited | Professional & scientific | 1999 |
| Sackville Plant Hire Ltd | Construction | 1999 |
| Safe 2 LET Go Ltd | Health & social care | 2016 |
| Safe 2 Rent (Sussex) Limited | Real estate | 2023 |
| Saffron Health Medical Ltd | Health & social care | 2025 |
| Safi Cleaning Services Limited | Administrative & support | 2008 |
| Saint Property Investments Limited | Real estate | 2025 |
| Sakesha Property Ltd | Real estate | 2025 |