| Regency Performing Arts Ltd | Arts & recreation | 2022 |
| Regency Productions Ltd | Administrative & support | 2020 |
| Reid CONSTRUCTION93 Limited | Construction | 2025 |
| REL Property Management Ltd | Real estate | 2023 |
| Remixd CIC | Education | 2024 |
| Renderboxes Limited | Information & communication | 2018 |
| Renewing Ltd | Construction | 2019 |
| Report Empty Properties Ltd | Administrative & support | 2025 |
| RES FM Limited | Construction | 2019 |
| Resin Roofing .Co.Uk Ltd | Construction | 2025 |
| Resolute Furniture Ltd | Manufacturing | 2021 |
| Restival Limited | Arts & recreation | 2025 |
| Reversing Cameras UK Ltd | Wholesale & retail | 2010 |
| Reynolds Estates Limited | Real estate | 2021 |
| Rezzonator Music Limited | Information & communication | 2008 |
| RF Electrical Solutions Ltd | Construction | 2024 |
| RG Claims Limited | Professional & scientific | 2012 |
| Rhabc Community Interest Company | Arts & recreation | 2026 |
| Rhino Express Cargo Limited | Wholesale & retail | 2016 |
| Rhino Remedial Ltd | Construction | 2022 |
| Rhpc Properties Ltd | Real estate | 2025 |
| Ricche Ltd | Information & communication | 2018 |
| Rice POP Properties Ltd | Real estate | 2019 |
| Rich Soul Ensemble Ltd | Arts & recreation | 2022 |
| RICH51 Trading Ltd | Wholesale & retail | 2024 |
| Richardson Legacies Ltd | Administrative & support | 2020 |
| Richborough Recycling Limited | Water & waste | 2015 |
| Richmond Aftercare Limited | Administrative & support | 2024 |
| Ricman Prosearch Limited | Administrative & support | 1998 |
| Ridgdale Investments Limited | Professional & scientific | 2017 |
| Riga Bros (UK) Limited | Wholesale & retail | 2003 |
| Rigden Estates (Kent) Limited | Extraterritorial | 2010 |
| Rigtel Ltd | Mining & quarrying | 2013 |
| Ring the Doughbell Ltd | Wholesale & retail | 2026 |
| Ringsloe Court Management Company Limited | Households | 1992 |
| RIO Care Ltd | Health & social care | 2017 |
| Rise Construction Kent Limited | Construction | 2016 |
| Rise&Bun Limited | Manufacturing | 2025 |
| River Runner Limited | Transport & logistics | 2026 |
| Riverside Meadow Ltd | Construction | 2021 |
| RJ Flight Aviation Limited | Transport & logistics | 2021 |
| RJM Garage Limited | Wholesale & retail | 2024 |
| RL Flight Crewing & Training Ltd | Other services | 2018 |
| RM 121 Football Coaching Ltd | Education | 2025 |
| Rnkmysterybreaks Ltd | Wholesale & retail | 2025 |
| RNR Electrical South East Ltd | Construction | 2024 |
| ROB House Illustration Limited | Information & communication | 2010 |
| Robina Court Freehold Limited | Households | 2018 |
| Robinsons Foundry Limited | Wholesale & retail | 1990 |
| Robo Global Ltd | Wholesale & retail | 2026 |
| Rockall Family Holding Limited | Financial services | 2026 |
| Rocket Multimedia Group Ltd | Information & communication | 2010 |
| Rocket Mums Limited | Education | 2019 |
| Rocketbreaks Ltd | Administrative & support | 2021 |
| Role Play Town Ramsgate Ltd | Arts & recreation | 2024 |
| Roman Commercial Limited | Real estate | 2025 |
| Ronnie Homes Ltd | Real estate | 2025 |
| Roostys Catering Services Ltd | Hospitality | 2026 |
| Root Publishing Ltd | Information & communication | 2022 |
| Rooted London Ltd | Professional & scientific | 2014 |
| Rosa Rankin-Gee Ltd | Professional & scientific | 2020 |
| Roscoit Ltd | Construction | 2026 |
| Rose Hill (ASH) Management Ltd | Construction | 2025 |
| Rose Travel Boutique Limited | Administrative & support | 2023 |
| Rothery Ltd | Professional & scientific | 2025 |
| Routeone Cycle Cafe Limited | Hospitality | 2015 |
| Rowe and Martin Limited | Construction | 2011 |
| Rowland Logistics Limited | Transport & logistics | 2022 |
| Royal Temple Yacht Club Limited | Arts & recreation | 2017 |
| RPM & CS Ltd | Construction | 2016 |
| RPM Civils Ltd | Professional & scientific | 2025 |
| RPS Electrical Specialists Ltd | Construction | 2022 |
| RR Holistic Care UK Ltd | Health & social care | 2018 |
| RS East Kent Limited | Hospitality | 2024 |
| RS Homes Kent Ltd | Real estate | 2006 |
| RS Marina Management Company Limited | Households | 2020 |
| RSW Property Investment's & Building Work Ltd | Real estate | 2024 |
| RTE Solutions Ltd | Information & communication | 2014 |
| RTL Holdings Group Limited | Professional & scientific | 2022 |
| Ruby Frances Bridal Ltd | Wholesale & retail | 2022 |
| Rufini & Co Ltd | Real estate | 2025 |
| Russell Developments South East Limited | Households | 2022 |
| S & R Flooring Ltd | Construction | 2020 |
| S a Nicholson Consultancy Limited | Professional & scientific | 2022 |
| S G Commercial Vehicle Repairs Ltd | Wholesale & retail | 2005 |
| S G Fishing Limited | Agriculture & fishing | 2021 |
| S&R Aygun Property Ltd | Real estate | 2024 |
| S&R Care Services Ltd | Professional & scientific | 2023 |
| S&S Accessories Ltd | Wholesale & retail | 2018 |
| S.J Travel Ltd | Transport & logistics | 2009 |
| S3B Machinery Limited | Wholesale & retail | 2021 |
| SA Property & Investment Group Ltd | Real estate | 2026 |
| Safe Hands Mobility Limited | Wholesale & retail | 2003 |
| Safeexchange Trading Limited | Financial services | 2023 |
| Safeguard Finance Limited | Administrative & support | 1954 |
| Safety Training Services Ltd | Education | 2015 |
| Saif ALI Limited | Wholesale & retail | 2025 |
| Saintly Care Ltd | Health & social care | 2022 |
| Salt Lodge Company Limited | Households | 2018 |
| Sameday Plumbers & GAS Ltd | Construction | 2023 |