| Rofer Services Ltd | Transport & logistics | 2020 |
| Rofeton Ltd | Wholesale & retail | 2025 |
| Roger Carne Ltd | Professional & scientific | 2018 |
| Roger Davis Independent Agronomy Limited | Agriculture & fishing | 2003 |
| Roger Hill Design Consultants Limited | Professional & scientific | 1977 |
| Roger's Signalling Engineers Limited | Construction | 2018 |
| Rogerson Property Ltd | Real estate | 2023 |
| Rogerson Property Partnership Ltd | Real estate | 2025 |
| Rogiv Ltd | Transport & logistics | 2019 |
| Rogoveanu Driver Services Limited | Transport & logistics | 2026 |
| Rogue Print Co Ltd | Manufacturing | 2022 |
| Rohan Umer Enterprises Limited | Wholesale & retail | 2025 |
| ROI4 Limited | Administrative & support | 2019 |
| Rojali Metalwork Limited | Manufacturing | 2008 |
| Rojam Ltd | Arts & recreation | 2021 |
| Rojan Limited | Transport & logistics | 1995 |
| Rol-Papers UK Ltd | Wholesale & retail | 2024 |
| Rolds Angelic Care Limited | Health & social care | 2024 |
| Rolds Legal Services Limited | Professional & scientific | 2015 |
| Rolis Trans Ltd | Transport & logistics | 2020 |
| Roll Around Homes Ltd | Real estate | 2026 |
| Roll Call Chilled Foods Limited | Wholesale & retail | 1994 |
| Rollins MOT Services Limited | Wholesale & retail | 2025 |
| Rolty Ltd | Wholesale & retail | 2026 |
| Roman & Rayan Developments Limited | Financial services | 2022 |
| Roman Construction Services Ltd | Construction | 2022 |
| Roman Gardens Eastrea Management Company Limited | Financial services | 2013 |
| ROMAN4DRIVE Ltd | Wholesale & retail | 2023 |
| Romans Auto Ltd | Wholesale & retail | 2023 |
| Rome Farms Limited | Agriculture & fishing | 2012 |
| Rome Improvements Ltd. | Construction | 2015 |
| Rona Electrical Limited | Construction | 2022 |
| Ronart Cars Limited | Manufacturing | 2014 |
| RONDO360 Academy LLP | | 2026 |
| Ronny Trans Ltd | Transport & logistics | 2016 |
| Rooark Ltd | Information & communication | 2025 |
| Roof Over YOU Ltd | Real estate | 2020 |
| Roofing Expert Ltd TA Cladding Expert Ltd | Construction | 2022 |
| Roofix-Solutions Ltd | Construction | 2024 |
| Rook Properties Ltd | Hospitality | 2024 |
| Roomello Ltd | Real estate | 2023 |
| Rooms to Rent Peterborough Ltd | Real estate | 2013 |
| Rooster Property Investments Limited | Real estate | 2014 |
| Root 66 Hair & Beauty Limited | Other services | 2006 |
| Roots & Wings Global Ltd | Health & social care | 2025 |
| Roots and Returns Limited | Agriculture & fishing | 2025 |
| Roots to Wings Psychology Ltd | Education | 2025 |
| Rorex Healthcare Limited | Administrative & support | 2026 |
| Rorex Limited | Administrative & support | 2013 |
| Rosanova Estate Limited | Financial services | 2024 |
| Rosariocare Limited | Health & social care | 2024 |
| Rose & Crown Thorney Ltd | Hospitality | 2025 |
| Rose & Sons Holdings Limited | Administrative & support | 2004 |
| Rose & Sons Properties Limited | Construction | 2011 |
| Rose & Sons,Limited | Construction | 1928 |
| Rose Aggregates Limited | Construction | 1991 |
| Rose and Bloom Meadows Ltd | Health & social care | 2025 |
| Rose and Willow Ltd | Professional & scientific | 1998 |
| Rose From a Concrete Ltd | Construction | 2014 |
| Rose From a Concrete Properties Ltd | Real estate | 2023 |
| Rose Homes (EA) Limited | Real estate | 1955 |
| Rose Investment Group Ltd | Real estate | 2025 |
| Rose Plant Hire (Whittlesey) Holdings Limited | Administrative & support | 2004 |
| Rose Plant Hire Holdings Limited | Financial services | 2021 |
| Rosedale Group Limited | Real estate | 2004 |
| Rosedale Property Agents (Bourne) Limited | Real estate | 2004 |
| Rosendale Engineering Ltd | Information & communication | 2022 |
| Roseward Ltd | Administrative & support | 2023 |
| Rosewill Limited | Professional & scientific | 1996 |
| Rosewood Close Whittlesey Management Company Limited | Households | 2017 |
| Roshni Takeaway Ltd | Hospitality | 2026 |
| Ross Gilbert Brickwork Limited | Construction | 2012 |
| Rosso Invest Ltd | Wholesale & retail | 2020 |
| Rosztrans Ltd | Transport & logistics | 2017 |
| Rotana Matham Ltd | Hospitality | 2024 |
| Rotating Equipment Verification Limited | Professional & scientific | 2018 |
| Rotational Torque Design Solutions Ltd | Construction | 2025 |
| Roti Food Bar Ltd | Hospitality | 2010 |
| Rotor Transport Ltd | Transport & logistics | 2025 |
| Roubler UK Limited | Information & communication | 2019 |
| Rought's Maintanance Ltd | Administrative & support | 2023 |
| Route 66 Transport Ltd | Transport & logistics | 2022 |
| Route Britannia Ltd | Transport & logistics | 2019 |
| ROUTE345 Ltd | Hospitality | 2024 |
| Routecare Ltd | Health & social care | 2024 |
| Routes to Retail Limited | Professional & scientific | 2017 |
| Routetoweb Ltd | Information & communication | 2012 |
| Roviro Ltd. | Wholesale & retail | 2017 |
| Rowellian Environmental Consulting Ltd | Professional & scientific | 2024 |
| Rowland Guard Security Systems Ltd | Administrative & support | 2020 |
| Rowlands Transport Limited | Wholesale & retail | 2018 |
| Rowner (Rodney Close) Residents Company Limited | Households | 2005 |
| Rowner (Shackleton Road) Residents Company Limited | Households | 2012 |
| Royal LAJ Diplomatic Services Limited | Administrative & support | 2012 |
| Royal Mencap Society | Health & social care | 1955 |
| Royston Farms Limited | Agriculture & fishing | 1993 |
| Rozalinda Ltd | Transport & logistics | 2019 |
| Rozaro Ltd | Transport & logistics | 2025 |
| Rozerin Ltd | Wholesale & retail | 2018 |
| Rozlor Limited | Wholesale & retail | 2025 |