| THE New Blenheim House (Newcastle) Management Company Limited | Real estate | 1991 |
| THE New Corner Shop Ltd | Wholesale & retail | 2024 |
| THE Newbridge Project | Arts & recreation | 2017 |
| THE Newcastle Business Park Management Company Limited | Households | 1989 |
| THE Newcastle Car Wash Limited | Other services | 2003 |
| THE Newcastle Girls Club Ltd | Other services | 2025 |
| THE Newcastle Hair Company Limited | Other services | 2014 |
| THE Newcastle Leaflet Company Ltd | Administrative & support | 2019 |
| THE Newcastle Review Ltd | Education | 2021 |
| THE Newcastle Upon Tyne Royal Grammar School | Administrative & support | 2006 |
| THE Nile Lounge Ltd | Hospitality | 2022 |
| THE Nine Software Company Limited | Information & communication | 2011 |
| THE North East (Erdf) Innovation Fund Limited Partnership | | 2017 |
| THE North East Buy to LET Experts Ltd | Real estate | 2021 |
| THE North East Co-Investment Fund Limited Partnership | | 2005 |
| THE North East Creative Content Fund Limited Partnership | | 2010 |
| THE North East Expedition Leader Limited | Administrative & support | 2023 |
| THE North East Fund Limited | Financial services | 2016 |
| THE North Fade Barber NE Ltd | Other services | 2026 |
| THE North of England Refugee Service Limited | Other services | 1998 |
| THE Northern Baptist Association | Other services | 2001 |
| THE Northern Centre for Psychological Therapies Training Limited | Education | 2019 |
| THE Northern Powergrid Foundation | Professional & scientific | 2022 |
| THE Northern School of Musical Theatre Limited | Education | 2025 |
| THE Northstar Foundation | Health & social care | 2014 |
| THE Northumbria Mysteries Productions Ltd | Information & communication | 2026 |
| THE Northumbria Partnership Cost Sharing Group Limited | Administrative & support | 2014 |
| THE Northumbrian Bakehouse Limited | Manufacturing | 2014 |
| THE Northumbrian Kitchen Limited | Hospitality | 2021 |
| THE Northumbrian Nest Limited | Wholesale & retail | 2025 |
| THE Northumbrian PEN Company Limited | Wholesale & retail | 2016 |
| THE Northumbrian Pipers' Society | Arts & recreation | 2010 |
| THE Novocastrians Rugby Football Club Limited | Arts & recreation | 1988 |
| THE Nursery at Killingworth Way Ltd | Education | 2024 |
| THE Oakhuas Limited | Hospitality | 2026 |
| THE Oaklands Garden Centre Limited | Wholesale & retail | 2020 |
| THE Oaks Sowerby Management Company Limited | Administrative & support | 2014 |
| THE ODD Duck Ltd | Hospitality | 2022 |
| THE OFF Grid Experience Ltd | Hospitality | 2022 |
| THE Old Coal Yard Ltd | Hospitality | 2025 |
| THE Old Mill (Ingleby) Ltd | Hospitality | 2004 |
| THE Old PO Gunnerton Ltd | Hospitality | 2026 |
| THE Old Sailor's Ltd | Manufacturing | 2021 |
| THE Old Station Mews Management Company Limited | Households | 2001 |
| THE Oliver Family Office Limited | Financial services | 2022 |
| THE One Collection Real Estate Ltd | Financial services | 2020 |
| THE One Eyed Stag Ltd | Other services | 2016 |
| THE One Percent Joy Ltd | Manufacturing | 2026 |
| THE Online Edit Limited | Wholesale & retail | 2019 |
| THE Optimisation Studio Ltd | Professional & scientific | 2025 |
| THE Oriental LAB Limited | Administrative & support | 2016 |
| THE Original Wallpaper Company Limited | Other services | 2010 |
| THE Outdoor Preschool Ltd | Education | 2018 |
| THE Oven Door (NE) Ltd | Hospitality | 2019 |
| THE OWL Group (NE) Ltd | Financial services | 2020 |
| THE OWL Tree Community Nest CIC | Health & social care | 2018 |
| THE PAC Newburn Ltd | Hospitality | 2024 |
| THE Packaging Suppliers Ltd | Administrative & support | 2026 |
| THE Paddocks (Acklington) Management Company Limited | Real estate | 2021 |
| THE Paint Shop (Swalwell) Limited | Wholesale & retail | 2026 |
| THE Paint Shop WB Limited | Wholesale & retail | 2025 |
| THE Pansy Garden Limited | Wholesale & retail | 2021 |
| THE Panther Group Worldwide Ltd | Administrative & support | 2014 |
| THE Parade Night Club Ltd | Hospitality | 2026 |
| THE Parent Experience Ltd | Professional & scientific | 2026 |
| THE Park (Durham) Management Company Limited | Real estate | 2008 |
| THE Park Hotel (Tynemouth) Limited | Extraterritorial | 1999 |
| THE Party Business Newcastle Ltd | Other services | 2018 |
| THE Pastures (Management Company) Limited | Households | 2023 |
| THE Pastures Lanchester Management Company Limited | Households | 2019 |
| THE Patton-Filson Group Limited | Information & communication | 2019 |
| THE PAW Pack Limited | Other services | 2017 |
| THE Pawsome Mobile Grooming Ltd | Other services | 2025 |
| THE PAY Works Limited | Professional & scientific | 2002 |
| THE Peacock Group Limited | Financial services | 2016 |
| THE People's Advice Service Limited | Information & communication | 2013 |
| THE People's Exchange Ltd | Wholesale & retail | 2025 |
| THE People's People CIC | Water & waste | 2022 |
| THE Phantom Vault Ltd | Wholesale & retail | 2024 |
| THE Pharmacist Network Group Ltd | Financial services | 2025 |
| THE Piano Room Ltd | Education | 2023 |
| THE PIP Factory Ltd | Information & communication | 2025 |
| THE Pizza House Ashington Ltd | Hospitality | 2025 |
| THE Planet Pizza (Newcastle) Limited | Hospitality | 2015 |
| THE Plashetts Group Limited | Real estate | 2026 |
| THE Play Cafe Ltd | Hospitality | 2018 |
| THE Plumbing Specialists Firm Ltd | Construction | 2025 |
| THE PNE Foundation | Professional & scientific | 2010 |
| THE Poetry Company Limited | Information & communication | 2017 |
| THE POKéMAN LTD | Hospitality | 2024 |
| THE Potato Shack Ltd | Hospitality | 2025 |
| THE Power Index Limited | Administrative & support | 2023 |
| THE Practice MK Limited | Health & social care | 2014 |
| THE Pre-Amps Band Ltd | Arts & recreation | 2022 |
| THE Printed BAG Shop Limited | Wholesale & retail | 2010 |
| THE Printworks Bar & Lounge Ltd | Hospitality | 2023 |
| THE Priory Court (South Shields) Residents Association Limited | Real estate | 1996 |
| THE Professionals Consultancy Ltd | Administrative & support | 2020 |
| THE Property Investment Partnership (the PIP) Ltd | Real estate | 2018 |
| THE Radiology Academy Ltd | Education | 2020 |