| Richards Elite 2026 Limited | Arts & recreation | 2025 |
| Richcare Services Ltd | Public administration | 2019 |
| Richmond Williams Consulting Ltd | Administrative & support | 2012 |
| Richwell Electrical Limited | Construction | 2012 |
| Rickard Lazenby Financial Services Ltd | Financial services | 1990 |
| Ridge & Cottage Ltd | Manufacturing | 2022 |
| Ridge View Design & Build Ltd | Construction | 2009 |
| Right Delivery Services Ltd | Transport & logistics | 2011 |
| Rila Yoga Ltd | Administrative & support | 2024 |
| Riley Fabrication Services Limited | Manufacturing | 2007 |
| Rill Marine Limited | Transport & logistics | 2019 |
| Ripley and Sons Limited | Extraterritorial | 2015 |
| Rise Scaffolding Limited | Construction | 2007 |
| Rising Phoenix Estates Ltd | Real estate | 2024 |
| Rite-Hite UK Limited | Manufacturing | 2017 |
| River Flow Creative Ltd | Professional & scientific | 2025 |
| River's Rodents and Reptiles C.I.C. | Information & communication | 2022 |
| RJ Beauty Sittingbourne Ltd | Other services | 2021 |
| Rjhmm Consulting Ltd | Professional & scientific | 2025 |
| Rjjw Ventures Ltd | Professional & scientific | 2026 |
| RJL Productions Ltd | Information & communication | 2024 |
| Rjrn Ltd | Wholesale & retail | 2024 |
| RK & KD Ltd | Transport & logistics | 2024 |
| RKA Grill Ltd | Other services | 2019 |
| RLC Auto Repairs Limited | Wholesale & retail | 2025 |
| RLC Mobile Mechanic Limited | Wholesale & retail | 2022 |
| RLP Accounting Ltd | Professional & scientific | 2020 |
| RLP Services Ltd | Information & communication | 2015 |
| RMB Home & Interiors Limited | Construction | 2009 |
| RMC Photography Limited | Professional & scientific | 2001 |
| RMC Plumbing Kent Ltd | Construction | 2023 |
| RMR Surfacing Ltd | Construction | 2023 |
| RMS Air Conditioning Limited | Energy | 1996 |
| Rmstarlight Ltd | Real estate | 2023 |
| RO Centre UK Ltd | Professional & scientific | 2021 |
| Road Eagle Services Ltd | Transport & logistics | 2023 |
| Road Rail Plant Ltd | Manufacturing | 2017 |
| Roalf Engineering Ltd | Professional & scientific | 2022 |
| ROB & Co Properties Limited | Real estate | 2023 |
| Robekars Services Limited | Health & social care | 2024 |
| Robin Close Owners Ltd | Households | 2019 |
| Robinson's Houses Ltd | Real estate | 2026 |
| Robotica Media Limited | Information & communication | 2025 |
| Rock Temple Ltd | Information & communication | 2019 |
| Rocky Dog Vets Ltd | Professional & scientific | 2023 |
| Rodak Transport Ltd | Transport & logistics | 2023 |
| Rodmersham Coffee Shop Limited | Wholesale & retail | 2018 |
| Roffa Holdings Ltd | Real estate | 2023 |
| Roger Rich Photographic Limited | Professional & scientific | 2013 |
| Rojinaria Ltd | Hospitality | 2025 |
| Rokel Consultancy Limited | Health & social care | 2021 |
| ROM Sealant Construction Ltd | Construction | 2019 |
| Roman&Son Ltd | Transport & logistics | 2022 |
| Romany Court RTM Company Ltd | Households | 2023 |
| Rona Healthcare Services Limited | Health & social care | 2013 |
| Ronivera Trans Ltd | Transport & logistics | 2018 |
| Rooftop Creative Ltd | Construction | 2025 |
| Roop Homes Limited | Real estate | 2020 |
| Root and Resolve Limited | Health & social care | 2025 |
| Ropedin Ltd | Construction | 2024 |
| Roper Road Residents Association Limited | Households | 1987 |
| Rosa's Plaice Ltd | Hospitality | 2023 |
| Rose Farm & Equestrian LLP | | 2019 |
| Rosemary Shrager Limited | Other services | 2009 |
| Rotary Radio UK Ltd | Arts & recreation | 2020 |
| Roteam Ltd | Construction | 2020 |
| Rothfield Property Limited | Real estate | 2023 |
| Rothwell Premium Finance Limited | Administrative & support | 2003 |
| Round Window Insights Limited | Other services | 2016 |
| Routeworks Limited | Professional & scientific | 2022 |
| Rowson-Wyatt Accountants Ltd | Professional & scientific | 2022 |
| RPA Property Management Ltd | Construction | 2024 |
| Rrak Ltd | Transport & logistics | 2024 |
| Rrcardsuk Ltd | Arts & recreation | 2024 |
| RRK Supplies Limited | Wholesale & retail | 2017 |
| RS Steelwork Ltd | Manufacturing | 2023 |
| RSK Tyres (Sittingbourne) Ltd | Wholesale & retail | 2024 |
| RTC Europe Limited | Professional & scientific | 1987 |
| Ruby Star Properties Ltd | Real estate | 2025 |
| Rumble Promotions Limited | Arts & recreation | 2021 |
| Runway Park and FLY Ltd | Transport & logistics | 2018 |
| Rushden Services Limited | Construction | 2016 |
| RXL Consulting Ltd. | Information & communication | 2014 |
| Ryamal Limited | Real estate | 2022 |
| Ryan's Cleaning Ltd | Administrative & support | 2024 |
| Ryansway HR Consultancy Limited | Professional & scientific | 2016 |
| Ryder Automotive Ltd | Wholesale & retail | 2015 |
| Ryder Motorcycles Ltd | Wholesale & retail | 2025 |
| Rydor Building Services Ltd | Construction | 2016 |
| S & C Scaffolding Limited | Construction | 2016 |
| S & E Kent Ltd | Wholesale & retail | 2026 |
| S & J Auto Repairs Limited | Wholesale & retail | 2025 |
| S & S Commercial Services Limited | Transport & logistics | 2017 |
| S a & M Kemsley Ltd | Professional & scientific | 2019 |
| S E Stone Ltd | Construction | 2014 |
| S F Projects Kent Ltd | Manufacturing | 2019 |
| S F Smart Services Limited | Wholesale & retail | 2025 |
| S J P Services Ltd | Transport & logistics | 2003 |
| S M F Drainage Solutions Limited | Professional & scientific | 2024 |
| S N P Body Repairs Ltd | Wholesale & retail | 2025 |