| Pink Leopard Studio Ltd | Wholesale & retail | 2025 |
| Pitstop (Market Rasen) Limited | Real estate | 2005 |
| Pitstop Rasen Limited | Wholesale & retail | 2017 |
| Pizza Devil Limited | Hospitality | 2025 |
| Pizza UNO Grimsby Ltd | Hospitality | 2023 |
| Pizza With Purpose Ltd | Education | 2025 |
| PJB Safety Consultancy Ltd | Professional & scientific | 2012 |
| PJF Engineering (Brigg) Limited | Professional & scientific | 2017 |
| PJP Healthcare Services Limited | Health & social care | 2022 |
| Play World (Gainsborough) Ltd | Arts & recreation | 2020 |
| PML Beauty Ltd | Other services | 2016 |
| Pocket Rockets Cleaning Rescue Limited | Administrative & support | 2021 |
| POLAR57 Ltd | Wholesale & retail | 2020 |
| Polarity Labs Limited | Information & communication | 2024 |
| Pond Plants UK Ltd | Wholesale & retail | 2023 |
| PPK Investments (2006) Limited | Real estate | 2006 |
| PPP Regulatory Consulting Ltd | Agriculture & fishing | 2025 |
| Precision Workwear Limited | Wholesale & retail | 2011 |
| Prima (Commercial Laundry) Ltd | Other services | 2018 |
| Prima (Launderettes) Ltd | Administrative & support | 2017 |
| Prima Cleaners Limited | Other services | 2013 |
| Prime Horizon Group Ltd | Information & communication | 2019 |
| Prime LET and Renovate Ltd | Real estate | 2026 |
| Private Lane Property Management Company Limited | Other services | 2006 |
| Pro-Ag Management Limited | Agriculture & fishing | 2007 |
| Progics Services Ltd | Other services | 2023 |
| Projekt Renewables Limited | Education | 2023 |
| Property and Business Finance Limited | Financial services | 2020 |
| Property Services Lincs Ltd | Construction | 2020 |
| Pure Life Source Ltd | Construction | 2024 |
| Pure Products London Limited | Wholesale & retail | 2016 |
| Purrfect Staycation Cattery Ltd | Other services | 2023 |
| Quadnet Services Ltd | Information & communication | 2004 |
| Quadrant Flooring Ltd | Construction | 2010 |
| Quadrant Surveying Limited | Professional & scientific | 2006 |
| Quantum Communications Limited | Information & communication | 2016 |
| Qube Surveyors Limited | Professional & scientific | 2020 |
| R & M Harrison Limited | Construction | 2009 |
| R C H Motors Limited | Wholesale & retail | 2020 |
| R C Woolliams & SON Limited | Agriculture & fishing | 2013 |
| R Fraser Builder Limited | Construction | 2014 |
| R J Properties and Leisure Limited | Professional & scientific | 1996 |
| R Little Garage Ltd | Wholesale & retail | 2010 |
| R&E Milligan Manby Farms Ltd | Financial services | 2019 |
| R.A. Baillie Ltd | Agriculture & fishing | 1997 |
| Rachel Green Food Promotions Ltd | Hospitality | 2015 |
| Rafe Olsen Limited | Manufacturing | 2024 |
| Raiff and Reggie’S Pubs Ltd | Hospitality | 2024 |
| Rainwater Tank Cleaning Ltd | Water & waste | 2013 |
| Rakshi Limited | Health & social care | 2008 |
| Ramsey Languages Limited | Professional & scientific | 2002 |
| Ranby Developments Limited | Construction | 1984 |
| Ranshaw’S Limited | Information & communication | 2024 |
| Rase Design Limited | Professional & scientific | 2025 |
| Rase Developments Limited | Construction | 2007 |
| Rase Holdings Limited | Financial services | 2021 |
| Rase Investments Limited | Financial services | 2021 |
| Rase Lending Limited | Other services | 2021 |
| Rase Logistics Limited | Financial services | 2010 |
| Rase Motors Limited | Wholesale & retail | 2022 |
| Rase Steel Holdings Limited | Financial services | 2024 |
| Rase Steels Construction and Civils Limited | Construction | 2015 |
| Rase VS Limited | Professional & scientific | 2015 |
| Rase VY Ltd | Professional & scientific | 2018 |
| Rasen Hardware Limited | Wholesale & retail | 2022 |
| RAW Concept Limited | Arts & recreation | 2017 |
| RAW Premises Limited | Real estate | 2025 |
| Readesign Kitchens Limited | Construction | 2001 |
| Redbird Developments Limited | Hospitality | 2023 |
| Redwing Investments Limited | Real estate | 2025 |
| Reecon Limited | Construction | 2025 |
| Regen AG Solutions Ltd | Agriculture & fishing | 2020 |
| Reigns Beauty Ltd | Wholesale & retail | 2024 |
| Reigns Group Limited | Professional & scientific | 2020 |
| Reingenuity Ltd | Manufacturing | 2023 |
| Reliable Product Delivery Limited | Professional & scientific | 2025 |
| Renewable Staff Solutions Limited | Administrative & support | 2023 |
| Research and Development Consultants Ltd | Professional & scientific | 2019 |
| Resilient Ballistics Limited | Public administration | 2018 |
| Resolvent Limited | Professional & scientific | 2018 |
| Rgdm Ltd | Professional & scientific | 2012 |
| Rhematrends Ltd | Wholesale & retail | 2020 |
| Rhodes Repair Services Limited | Manufacturing | 2012 |
| Rich Luxury Properties Limited | Real estate | 2024 |
| Richardson-Uk Ltd | Information & communication | 2019 |
| Richmond Enterprises (2013) Ltd | Manufacturing | 2013 |
| Rick Smith Design Limited | Professional & scientific | 2008 |
| Rise&Defy Ltd | Wholesale & retail | 2023 |
| Riva Surveyors (Commercial) Limited | Construction | 2020 |
| Riva Surveyors Limited | Professional & scientific | 2019 |
| Rivermoor Accounting Limited | Professional & scientific | 2017 |
| RJN Decorating Limited | Construction | 2015 |
| RJT Electrical (Lincs) Ltd | Construction | 2019 |
| RMB Digital Ltd | Information & communication | 2024 |
| Robert Nickerson & SON Limited | Agriculture & fishing | 1976 |
| Roberts Roberts Holdings Limited | Financial services | 2022 |
| Robinson Farms Contracting Limited | Agriculture & fishing | 2013 |
| Robinstock Ltd | Wholesale & retail | 2000 |
| Rock Caistor Ltd | Health & social care | 2017 |
| Rockfrog Limited | Real estate | 2011 |