| Road Master Coaches Ltd | Transport & logistics | 2024 |
| Road Runners Mechanics & Tyres Ltd | Wholesale & retail | 2012 |
| Road-Link-Uk Ltd | Wholesale & retail | 2018 |
| Roadlink Hire Ltd | Wholesale & retail | 2019 |
| Robert Marble Ltd | Manufacturing | 2023 |
| Robin Hood Group Limited | Water & waste | 2015 |
| Robmax Joinery Ltd | Construction | 2026 |
| Robodoc Limited | Manufacturing | 2026 |
| Robyn Care Limited | Health & social care | 2016 |
| Rock Alpine Builders Ltd | Construction | 2025 |
| Rock's Fryer Limited | Hospitality | 2011 |
| Rocket Estate Agents Ltd | Real estate | 2014 |
| Rocket Trading Ltd | Construction | 2023 |
| Rockford Wholesale Ltd | Wholesale & retail | 2021 |
| Rockhard Ltd | Real estate | 2023 |
| Rockshield Limited | Wholesale & retail | 2024 |
| Rockwoodroofing Ltd | Construction | 2025 |
| Rocky Bear Logistics Ltd | Transport & logistics | 2025 |
| Rocky Roofing Solutions Ltd | Construction | 2025 |
| Rohail Sandhu Ltd | Other services | 2019 |
| Rohit Accessories Limited | Wholesale & retail | 2015 |
| Rohit Bhatia Ltd | Construction | 2021 |
| Rohit Logistics Ltd | Transport & logistics | 2026 |
| Roht Invest Ltd | Wholesale & retail | 2024 |
| Roka Property Partners Limited | Administrative & support | 2025 |
| Rokee Ventures Ltd | Wholesale & retail | 2020 |
| Rokk Bijou Limited | Administrative & support | 2009 |
| Roller Hire Ltd | Wholesale & retail | 2021 |
| Rolling Cargo Ltd | Transport & logistics | 2019 |
| Rolling RIM Logistics Limited | Transport & logistics | 2025 |
| Rollmar Limited | Administrative & support | 2007 |
| Rollon Hegan UK Ltd | Wholesale & retail | 2024 |
| Roma Pizza Hayes Ltd | Hospitality | 2024 |
| Romana Haulage Ltd | Transport & logistics | 2015 |
| Romana Sons Haulage Ltd | Transport & logistics | 2023 |
| Romez Homez Ltd | Real estate | 2025 |
| Romford Golf Trading Ltd | Arts & recreation | 2024 |
| Romford Travel Limited | Information & communication | 2018 |
| Romford Tyres Limited | Wholesale & retail | 2016 |
| Romics LP | | 2021 |
| Ronitdeep & Co Ltd | Wholesale & retail | 2024 |
| Ronnie's Food Ltd | Hospitality | 2026 |
| Roof and Home Ltd | Construction | 2023 |
| Roof Techies Ltd | Construction | 2022 |
| Roofing for London Limited | Construction | 2019 |
| Roofstar Limited | Construction | 2021 |
| Roomslanka UK Ltd | Information & communication | 2017 |
| Roomwala Ltd | Information & communication | 2022 |
| Roop Enterprises Ltd | Wholesale & retail | 2025 |
| Roop Transport Ltd | Transport & logistics | 2024 |
| Roops Beauty Salon Ltd | Other services | 2019 |
| Rooster Hayes Town Limited | Hospitality | 2023 |
| Roosters Peri Peri Ltd | Hospitality | 2019 |
| Roots and Wings Ltd | Health & social care | 2025 |
| Roovo Limited | Real estate | 2024 |
| ROR Boys Roofing Ltd | Construction | 2026 |
| ROR Logistics Ltd | Transport & logistics | 2025 |
| Rose Parking Ltd | Transport & logistics | 2024 |
| Rose Pearl Limited | Information & communication | 2025 |
| Rose Property Services Limited | Other services | 1993 |
| Rosemay Hotels Ltd | Hospitality | 2021 |
| Rosepearl Services Limited | Information & communication | 2025 |
| Rosewell Car Hire Ltd | Administrative & support | 2025 |
| Rosewhite Management Ltd | Professional & scientific | 2018 |
| Rosewood Garage PVT Ltd | Wholesale & retail | 2023 |
| Rosewood Park Property & Management Ltd | Hospitality | 2001 |
| Rosewoodz Ltd | Wholesale & retail | 2026 |
| Rosh Posh Ltd | Wholesale & retail | 2024 |
| Roshni Properties Ltd | Real estate | 2020 |
| Roshni Traders Limited | Real estate | 2011 |
| Rosslea (Windlesham) Management Company Limited | Households | 1995 |
| Rostrevors Holdings Ltd | Real estate | 2024 |
| Roti Joupa Mobile (East) Ltd | Hospitality | 2016 |
| Roti Joupa Mobile (West) Ltd | Hospitality | 2016 |
| Route Clear Logistics Ltd | Transport & logistics | 2024 |
| Routine Services Limited | Construction | 2023 |
| ROV Housing Management Limited | Real estate | 2021 |
| Rowden Farm Management Company Limited | Households | 2009 |
| Rowensbrook Training and Development Limited | Education | 2017 |
| Roxy Holidays Ltd | Information & communication | 2020 |
| ROY Barber's Ltd | Other services | 2022 |
| Roy's Transport Ltd | Transport & logistics | 2019 |
| Roya Clear Ltd | Administrative & support | 2024 |
| Royale Estates Ltd | Real estate | 2026 |
| Royale High Roofing Ltd | Construction | 2025 |
| Royale Property Ltd | Real estate | 2025 |
| Royale Real Estate Ltd | Real estate | 2025 |
| Royall Prestige Limited | Wholesale & retail | 2020 |
| Royce Peach Limited | Information & communication | 2023 |
| Roye Aircraft Services Ltd | Manufacturing | 2012 |
| RP Market Ltd | Wholesale & retail | 2024 |
| RP Technology Limited | Information & communication | 2026 |
| RPB Solutions Limited | Information & communication | 2013 |
| RPP Lightshot Ltd | Professional & scientific | 2018 |
| RPS Builders Ltd | Construction | 2017 |
| RPS Real Estate Limited | Real estate | 2022 |
| RPX Consulting Limited | Information & communication | 2017 |
| Rqgoc Ltd | Wholesale & retail | 2025 |
| RR Contractors Ltd | Construction | 2025 |
| RR Land & Property Limited | Construction | 2025 |