| Rebus Rail Ltd | Professional & scientific | 2019 |
| Red Square Beverages Limited | Professional & scientific | 2000 |
| Redford Investments Limited | Real estate | 2019 |
| Redia Ltd | Health & social care | 2016 |
| Reedwater Limited | Public administration | 2015 |
| Reel Deal Entertainment Ltd | Arts & recreation | 2008 |
| Reemove Ltd | Construction | 2018 |
| Regan Family Holdings Limited | Financial services | 2018 |
| Reid & Associates Property Group Ltd | Real estate | 2026 |
| Reneco Haulage Ltd | Transport & logistics | 2022 |
| Renewable Zeal Ltd | Professional & scientific | 2020 |
| Renewcraft FIX & Maintain Ltd | Construction | 2025 |
| Rennies Enterprises Limited | Hospitality | 2012 |
| Renovade Properties Ltd | Real estate | 2025 |
| Renown Rivals Ltd | Transport & logistics | 2023 |
| Renu Futures Ltd | Health & social care | 2026 |
| Renyra Holdings Ltd | Real estate | 2026 |
| Repack Services Ltd | Administrative & support | 2020 |
| Repcode Limited | Information & communication | 2018 |
| RF Doors Ltd | Other services | 2020 |
| RG Logistics Ltd | Transport & logistics | 2023 |
| Rhys’S Barbering & Hairdressing Ltd | Other services | 2026 |
| Richard Oxley Home Improvements Ltd | Construction | 2025 |
| Right Choice Conveyancing Ltd | Administrative & support | 2009 |
| Right Choice Holdings Limited | Financial services | 2023 |
| RIO Bravo Mexican Ltd | Hospitality | 2020 |
| RIO George Limited | Transport & logistics | 2014 |
| RIU Beauty Limited | Wholesale & retail | 2026 |
| RJC Racking Inspections Limited | Other services | 2022 |
| Rjsg Consultancy Ltd | Information & communication | 2019 |
| RLC Industries Ltd | Construction | 2015 |
| RM Global Pathways Ltd | Education | 2025 |
| RNW Plumbing & Heating Ltd | Construction | 2025 |
| Robert Imafidon Esquire Ltd | Health & social care | 2020 |
| Robson & Partners Limited | Professional & scientific | 2024 |
| Roccobella's Pet Care Services Ltd | Health & social care | 2024 |
| Rock City Amusements Ltd | Arts & recreation | 2011 |
| Rock City Cafe Ltd | Hospitality | 2017 |
| Rock Stamps Ltd | Wholesale & retail | 1995 |
| ROD Colman Rotomould Service Ltd | Manufacturing | 2011 |
| Rolandtrans Ltd | Transport & logistics | 2025 |
| Rolton Group Limited | Professional & scientific | 1981 |
| Romlil Cleaning Services Ltd | Administrative & support | 2019 |
| Ronald Property Investments Limited | Real estate | 2023 |
| Roots to Healing Healthcare Limited | Hospitality | 2016 |
| Rose Property and Investment Limited | Construction | 2021 |
| Rosecroft Home Support and Companionship Ltd | Health & social care | 2026 |
| Ross Interiors Ltd | Construction | 2025 |
| Rotary Wing Aviation Limited | Other services | 2020 |
| Rotomachines Limited | Professional & scientific | 2010 |
| Rotorheads Ltd | Financial services | 2025 |
| Rowdyridersuk Ltd | Extraterritorial | 2025 |
| Rowe Resolution Ltd | Information & communication | 2023 |
| RRF Rushden Ltd | Other services | 2024 |
| RSD Car Cleaning Ltd | Administrative & support | 2026 |
| RSM UK Services Limited | Transport & logistics | 2023 |
| Rumours Hairdressing Limited | Other services | 2016 |
| Run IT UP Records Ltd | Arts & recreation | 2022 |
| Rushden & Higham Community Boxing Club Ltd | Arts & recreation | 2018 |
| Rushden and Higham Tax Returns Ltd | Professional & scientific | 2016 |
| Rushden Blue Limited | Hospitality | 2025 |
| Rushden Boarding Kennels Ltd | Other services | 2017 |
| Rushden Catering Ltd | Hospitality | 2025 |
| Rushden Chiropractic Clinic Limited | Health & social care | 2018 |
| Rushden Conservative Club Company,Limited | Hospitality | 1887 |
| Rushden Escape Rooms Ltd | Arts & recreation | 2023 |
| Rushden Fish 2025 Ltd | Hospitality | 2025 |
| Rushden Hand Car Wash Limited | Other services | 2015 |
| Rushden Higham & Wellingborough Railway Limited | Transport & logistics | 2007 |
| Rushden Machine Tools Ltd | Wholesale & retail | 2025 |
| Rushden MOT Centre Limited | Wholesale & retail | 2004 |
| Rushden Motors Ltd | Wholesale & retail | 2019 |
| Rushden Podiatry Ltd | Health & social care | 2020 |
| Rushden Rewinds Limited | Construction | 2002 |
| Rushden Subway Limited | Wholesale & retail | 2013 |
| Rushden Sunbed Ltd | Administrative & support | 2024 |
| Rushden Sushi Ltd | Hospitality | 2021 |
| Rushden Town Bowling Club Limited | Arts & recreation | 1987 |
| Rushden WOK Limited | Hospitality | 2022 |
| Rushpol Ltd | Wholesale & retail | 2016 |
| Rushtan Ltd | Other services | 2009 |
| Russell Court (Rushden) Management Company Limited | Other services | 2013 |
| Ruva Voyages Limited | Administrative & support | 2024 |
| RW Home Construction Ltd | Construction | 2007 |
| Rylee Studio Ltd | Arts & recreation | 2025 |
| S & a Mobile Catering Ltd | Hospitality | 2024 |
| S Furk Design Ltd | Professional & scientific | 2023 |
| S J West Press Knives Ltd | Manufacturing | 2012 |
| S Walker Roofing Ltd | Construction | 2021 |
| SA2026 Ltd | Information & communication | 2025 |
| Sackeycars Ltd | Wholesale & retail | 2025 |
| Sacred Moth Property Ltd | Real estate | 2021 |
| Sadler's Brewhouse Limited | Hospitality | 2015 |
| Sadler's Peaky Blinder Distillery Ltd | Manufacturing | 2004 |
| Safe Foam Removal Specialists Ltd | Other services | 2024 |
| Safety for YOU Consultancy Limited | Professional & scientific | 2024 |
| Safken Ltd | Real estate | 2022 |
| Sakira Property Ltd | Real estate | 2022 |
| Sams Commerce Ltd | Wholesale & retail | 2023 |
| Sandalwood Limited | Other services | 2016 |