| ROC Luxaa Ltd | Real estate | 2022 |
| Rocot Limited | Manufacturing | 1992 |
| Rodi Stores Ltd | Wholesale & retail | 2017 |
| Roolexevents Limited | Hospitality | 2025 |
| Room for Improvement Inc Ltd | Construction | 2018 |
| Roots Hair Salon Ltd | Other services | 2020 |
| Rope & Rigging Limited | Manufacturing | 2006 |
| Rope and Anchor Trading Co Limited | Arts & recreation | 2019 |
| Rosabe Holdings Limited | Extraterritorial | 2022 |
| Rosco Developments Ltd | Construction | 2022 |
| Rose & Seoul Ltd | Wholesale & retail | 2026 |
| Rossington Blyth Limited | Real estate | 2011 |
| Rossington Farms Limited | Real estate | 1998 |
| Rossington Park Limited | Real estate | 2002 |
| Rossington Refine Limited | Financial services | 2020 |
| Rossington's Building Supplies Limited | Real estate | 2011 |
| Rowley Services Ltd | Professional & scientific | 2022 |
| ROZ Evans Limited | Financial services | 2012 |
| RRK Van Sales Limited | Wholesale & retail | 2014 |
| RS Insurance Brokers Ltd. | Financial services | 2004 |
| RS Nishikigoi Limited | Wholesale & retail | 2018 |
| RS11 (Holdings) Limited | Financial services | 2016 |
| RSB Bricklaying Solutions Limited | Financial services | 2022 |
| RSB Homes Ltd | Real estate | 2021 |
| RSH Property Developments Limited | Construction | 2016 |
| Rsib Holdings Ltd | Professional & scientific | 2007 |
| RT Eats Ltd | Hospitality | 2023 |
| RT Fit Ltd | Arts & recreation | 2023 |
| Rubber Safety Solutions Limited | Wholesale & retail | 2022 |
| Rudland Properties Limited | Real estate | 1963 |
| Rufford House Group Limited | Real estate | 2014 |
| Rushmoor Services Ltd | Mining & quarrying | 2019 |
| Russell Control Solutions Limited | Professional & scientific | 2025 |
| Rutland Surveyors LLP | | 2019 |
| Ryan Terry Holdings Ltd | Financial services | 2023 |
| S & J Fibre Limited | Construction | 2022 |
| S a Johnson Welding Service Ltd | Construction | 2025 |
| S Flynn Leisure Ltd | Real estate | 2025 |
| S H Reeson Limited | Professional & scientific | 2021 |
| S Johnson Construction Limited | Construction | 2015 |
| S K Fabrications Limited | Manufacturing | 2012 |
| S N S Heating Limited | Construction | 2016 |
| S S Barbers Ltd | Other services | 2025 |
| S Smith Properties Limited | Real estate | 2024 |
| S&C Haulage (Retford) Limited | Transport & logistics | 2016 |
| S&E Cleaning Solutions Ltd | Administrative & support | 2016 |
| S&L Edge Co Ltd | Financial services | 2024 |
| Saaw Properties Ltd | Real estate | 2026 |
| Sadie Scott Consulting Ltd | Administrative & support | 2003 |
| Safety Values Limited | Administrative & support | 2021 |
| Saintgrace Limited | Professional & scientific | 1985 |
| Salvin Wealth Partners Limited | Professional & scientific | 2017 |
| SAM Harley Services Limited | Transport & logistics | 2021 |
| Sambar Limited | Real estate | 2008 |
| Sanderson Racing Company Ltd | Professional & scientific | 2026 |
| Sandy Wilson Crowle Limited | Manufacturing | 2011 |
| Sarah J Hannah Ltd | Hospitality | 2025 |
| Sarah Louise Stevens Limited | Extraterritorial | 2025 |
| Sarah Nicholson Psychotherapy Limited | Health & social care | 2025 |
| Sarflo Limited | Transport & logistics | 2017 |
| Saundby Homes Limited | Construction | 2025 |
| Saundby Limited | Agriculture & fishing | 2020 |
| Save Your Time Concrete Ltd | Transport & logistics | 2025 |
| SAW Tree Services and Garden Maintenance Limited | Administrative & support | 2018 |
| SB Treswell Limited | Real estate | 2026 |
| SBS Waste Services Ltd | Water & waste | 2023 |
| Scan Tech Commercials Ltd | Wholesale & retail | 2021 |
| Scarlettsecrets Ltd | Information & communication | 2025 |
| Scheibler Edgewise Limited | Manufacturing | 1997 |
| Scholar's Mate Limited | Professional & scientific | 2025 |
| Scholey Properties Limited | Real estate | 1987 |
| Sciflow Ltd | Information & communication | 2021 |
| SCL Estates Limited | Real estate | 2025 |
| Scope Office Installations Limited | Construction | 2019 |
| Scope Office Limited | Construction | 2017 |
| Scott Bland Civils Limited | Construction | 2019 |
| Scott Ogden Racing Ltd | Arts & recreation | 2021 |
| Screen Moves Limited | Transport & logistics | 2001 |
| Screwmonger Limited | Wholesale & retail | 2012 |
| Screwsline Limited | Extraterritorial | 2012 |
| Scrimshaw Limited | Wholesale & retail | 2023 |
| SCS Homes Ltd | Construction | 2023 |
| SDN Pallets Limited | Manufacturing | 2010 |
| SDS Rotherham Ltd | Wholesale & retail | 2012 |
| Secrets Retford Limited | Hospitality | 2023 |
| Security and TV Expert Ltd | Administrative & support | 2026 |
| Seethetape Ltd | Wholesale & retail | 2022 |
| Segelocum Ltd | Professional & scientific | 2009 |
| Select Advertising Ltd | Professional & scientific | 2025 |
| Sema Auto Ltd | Wholesale & retail | 2019 |
| Seminal DJ Limited | Information & communication | 2014 |
| Senior Plumbing & Heating (Tuxford) Ltd | Construction | 2020 |
| Serban Windows Limited | Construction | 2020 |
| Serene Self Psychology Ltd | Health & social care | 2023 |
| Serenity Pursuit Ventures Ltd | Other services | 2024 |
| Seventy Hospitality Limited | Real estate | 2025 |
| Sharkeye Properties UK Limited | Real estate | 2021 |
| Sharm Eqyptian Apartments Ltd | Real estate | 2026 |
| Sharni K Coaching Limited | Education | 2022 |
| Shawfield Services Limited | Administrative & support | 2019 |