| NS Security Ltd | Administrative & support | 2020 |
| Ntabtech Ltd | Health & social care | 2024 |
| Ntuity Datavalley Ltd | Information & communication | 2011 |
| NU Floor Limited | Construction | 2011 |
| Nunns Farm LLP | | 2023 |
| Nunns Investments Ltd | Financial services | 2024 |
| Nuyu Aesthetics by Tracey Kent Limited | Other services | 2021 |
| NYX Safety Ltd | Professional & scientific | 2024 |
| O'Brien Drainage Limited | Administrative & support | 2014 |
| O.S.P.O.S Limited | Administrative & support | 2024 |
| Oak & ASH Renovations Network Ltd | Construction | 2026 |
| Oaklands Yorkshire Ltd | Real estate | 2013 |
| Oakway Developments Limited | Real estate | 2017 |
| Ochre Group Limited | Health & social care | 2019 |
| Odano Limited | Professional & scientific | 2012 |
| Odrawings Limited | Professional & scientific | 2021 |
| Odyssey Advisory Ltd | Professional & scientific | 2025 |
| OJS Solutions Ltd | Other services | 2012 |
| Old Station CMF Ltd | Arts & recreation | 2019 |
| Omega Security Services Ltd. | Administrative & support | 2015 |
| ON CLOUD9 Tax Ltd | Extraterritorial | 2023 |
| ON Contracting Ltd | Manufacturing | 2019 |
| ON Spec Recruitment Ltd | Administrative & support | 2024 |
| One Star One Ltd | Hospitality | 2024 |
| Only the Kind Media Limited | Professional & scientific | 2023 |
| Opal Properties Yorkshire Ltd | Real estate | 2022 |
| Open Arms (Homecare) Ltd | Health & social care | 2024 |
| Open Arms (Selby) Limited | Other services | 2015 |
| Opsix Ltd | Information & communication | 2025 |
| Optimus Transporters Ltd | Extraterritorial | 2024 |
| Orange 4893 Limited | Hospitality | 2021 |
| Otlc Investments Ltd | Real estate | 2025 |
| Outdoor Sports Group Ltd | Arts & recreation | 2026 |
| Pacey Performance Limited | Education | 2019 |
| Pacha Properties Limited | Real estate | 2010 |
| Packworks (Selby) Ltd | Wholesale & retail | 2026 |
| Paddock Properties (Wressle) Limited | Construction | 2003 |
| Pandaface Ltd | Professional & scientific | 2018 |
| Park ROW Properties (Smales) Ltd | Real estate | 2019 |
| Park ROW Properties (Yorkshire) Limited | Real estate | 2009 |
| Parts for Quads Limited | Wholesale & retail | 2016 |
| Passline Ltd | Professional & scientific | 2023 |
| Pastures Lettings Ltd | Real estate | 2022 |
| Pathway Therapy Ltd | Education | 2023 |
| Paul Johnson Holdings Ltd | Financial services | 2021 |
| PAWS4COMFORT Ltd | Wholesale & retail | 2024 |
| PAWS4FOOD Limited | Wholesale & retail | 2018 |
| Payax Group Limited | Professional & scientific | 2016 |
| Payax Holdings Limited | Financial services | 2026 |
| PB HDI & Logistics Limited | Other services | 2015 |
| PCR Plumbers Ltd | Construction | 2023 |
| PCS Leisure Limited | Hospitality | 2012 |
| PD Property Reports Limited | Other services | 2023 |
| Pearse Ward Properties Ltd | Real estate | 2023 |
| Pelanto Property Investment Ltd | Other services | 2018 |
| Penrose Logistics Ltd | Transport & logistics | 2025 |
| PER Niente Ltd | Wholesale & retail | 2023 |
| Perfectus Business Solutions Limited | Professional & scientific | 2012 |
| Pete's Peat Free Ltd | Extraterritorial | 2022 |
| PFF Passion for Fashion Limited | Wholesale & retail | 2024 |
| Pfpv Logistics Ltd | Transport & logistics | 2024 |
| PGW Holdings Limited | Extraterritorial | 2015 |
| Philip Luis Design & SON Ltd | Construction | 2024 |
| Phillips Waste Management Ltd | Water & waste | 2018 |
| PI Insight & Research Limited | Professional & scientific | 2019 |
| PILLAR2POST Properties Ltd | Real estate | 2026 |
| Pink Panther Group Ltd | Other services | 2025 |
| Pink Sun Ltd | Wholesale & retail | 2010 |
| Pinnn Limited | Real estate | 2005 |
| Pinup Pugs Ltd | Wholesale & retail | 2015 |
| Piotr & Domcia Art Limited | Transport & logistics | 2023 |
| Pipa-Assist Limited | Information & communication | 2026 |
| Pipetec Fabrications Limited | Manufacturing | 2024 |
| Pitch Side Catering Ltd | Hospitality | 2021 |
| Pizza Slice Grill (Selby) Ltd | Hospitality | 2025 |
| Plan Care Solutions Limited | Health & social care | 2018 |
| Player Two Ltd | Information & communication | 2025 |
| Pletts Personnel Limited | Administrative & support | 2008 |
| Plumbing by Taylor Ltd | Construction | 2022 |
| Pmcr Comm Services Limited | Administrative & support | 2007 |
| Polray Ltd | Real estate | 2020 |
| POP YER Clogs Theatre Ltd | Arts & recreation | 2023 |
| Popescu Transport Limited | Transport & logistics | 2025 |
| Porter Phillips Limited | Information & communication | 2022 |
| Postcura Ltd | Professional & scientific | 2024 |
| Posties Pantry Ltd | Wholesale & retail | 2016 |
| Poultiggery Events Ltd | Hospitality | 2025 |
| Poulton Carpets, Curtains & Blinds Limited | Wholesale & retail | 2003 |
| Powell Properties (Yorkshire) Limited | Real estate | 2023 |
| Poweredbynova Limited | Professional & scientific | 2024 |
| Pr&Mier Holdings Limited | Financial services | 2020 |
| Praxis Building Solutions Ltd | Construction | 2024 |
| Praxis PM Limited | Professional & scientific | 2018 |
| PRC Agricultural Ltd | Wholesale & retail | 2018 |
| Precious Flooring Limited | Construction | 2010 |
| Precision Drone Services Ltd | Agriculture & fishing | 2024 |
| Preconstruction Solutions Ltd | Professional & scientific | 2020 |
| Prestige Eleven Ltd | Other services | 2024 |
| Prime Lubricants Limited | Wholesale & retail | 2003 |
| Principal Dynamics Limited | Professional & scientific | 2012 |