| With NOT at Ltd | Real estate | 2025 |
| Withers Roofing Limited | Construction | 2018 |
| Witton Tower Management Limited | Households | 2005 |
| Wizardly Technology Limited | Information & communication | 2024 |
| Wizorda Limited | Information & communication | 2024 |
| Wizzypro Group Limited | Professional & scientific | 2025 |
| WJ Waste Removals Ltd | Water & waste | 2021 |
| WK Estate NCL Limited | Real estate | 2026 |
| WLA Property & Lettings Ltd | Real estate | 2025 |
| WLH Property NE Ltd | Hospitality | 2023 |
| Wlhplus Ltd | Hospitality | 2020 |
| WLT Trading Limited | Wholesale & retail | 2020 |
| WM Cars Ltd | Wholesale & retail | 2024 |
| WM Blade Repair Ltd | Manufacturing | 2026 |
| WM Stott Engineering Services Ltd | Manufacturing | 2025 |
| Wnmdk Limited | Hospitality | 2026 |
| WOD Consulting Ltd | Administrative & support | 2023 |
| WOK HEY Newcastle Limited | Hospitality | 2025 |
| WOK Inn South Shields Limited | Hospitality | 2013 |
| Wokaway Limited | Hospitality | 2012 |
| Wokify Express Ltd | Hospitality | 2026 |
| Wokify Gosforth Ltd | Hospitality | 2025 |
| Wokncurry Limited | Hospitality | 2026 |
| Wolf & Wood Interactive Ltd | Information & communication | 2015 |
| Wolf Clothing Ltd | Wholesale & retail | 2025 |
| Wolf Properties (NE) Ltd | Real estate | 2024 |
| Wolf Property Group Limited | Real estate | 2021 |
| Wolfpact Limited | Wholesale & retail | 2019 |
| Women in Geothermal UK CIC | Professional & scientific | 2024 |
| Women in Tech North East Community Interest Company | Information & communication | 2024 |
| Wonder Sensory Ltd | Arts & recreation | 2021 |
| Wonderlawn Ltd | Administrative & support | 2012 |
| Wonderpharm Limited | Professional & scientific | 2025 |
| Wonderstuff Group Ltd | Professional & scientific | 2013 |
| Wongry Limited | Hospitality | 2022 |
| Wonk Ltd | Professional & scientific | 2015 |
| Woo's Tattoos Ltd | Arts & recreation | 2026 |
| Wood Hub CIC | Health & social care | 2021 |
| Wood Loft Cottage Limited | Hospitality | 2019 |
| Wood to Love Ltd | Other services | 2017 |
| Woodacre Apartments Management Company Ltd | Real estate | 2017 |
| Woodacre Wallsend Management Limited | Households | 2022 |
| Woodbine Business Services Ltd | Extraterritorial | 2009 |
| Woodbury Lets Ltd | Real estate | 2016 |
| Woodenbox Publishing Limited | Information & communication | 2020 |
| Woodenbox Records Limited | Information & communication | 2007 |
| Woodgreen (Blyth) Residents Management Company Limited | Households | 2020 |
| Woodham Court (Management) Limited | Real estate | 2001 |
| Woodhill Building Services Ltd | Real estate | 2024 |
| Woodhill Investment Properties Ltd | Real estate | 2024 |
| Woodhouse Mews Management Limited | Households | 2019 |
| Woodland Paws Care Limited | Other services | 2019 |
| Woodland Paws Limited | Other services | 2019 |
| Woodland Place (Middlesbrough) Management Company Limited | Real estate | 2025 |
| Woodlands Hair & Beauty Ltd | Other services | 2015 |
| Woodlands Playgroup Community Interest Company | Education | 2014 |
| Woodmans Cottage Holidays Ltd | Real estate | 2024 |
| Woods and Walker Ltd | Information & communication | 2015 |
| Woodside Engineering Ltd | Information & communication | 2025 |
| Woodslantz Ltd | Wholesale & retail | 2026 |
| Woodsman Arboriculture Ltd | Agriculture & fishing | 2024 |
| Woodvale Consulting Ltd | Professional & scientific | 2025 |
| Woody Electrical Limited | Construction | 2024 |
| Woodys Sports Academy Ltd | Education | 2021 |
| Woodys Sports Education Ltd | Education | 2021 |
| Woof & Tumble Ltd | Arts & recreation | 2025 |
| Wool Combers Limited | Households | 1966 |
| Wool on the Tyne Ltd | Wholesale & retail | 2022 |
| Woolacombe Shores Ltd | Construction | 2026 |
| Woolamai Group UK Limited | Extraterritorial | 2009 |
| Woolsington Bridge Nurseries Limited | Other services | 1963 |
| Woolsington One Limited | Real estate | 2016 |
| WOR Health Limited | Other services | 2024 |
| WOR Kids NE CIC | Information & communication | 2025 |
| Work Free World Ltd | Wholesale & retail | 2013 |
| Workflo Holdings Ltd | Financial services | 2023 |
| Workflo Logistics Ltd | Transport & logistics | 2022 |
| Workflo Ltd | Manufacturing | 2023 |
| Workie Ticket Theatre CIC | Education | 2019 |
| Working Well Consultancy Limited | Professional & scientific | 2008 |
| Workplace Foundation | Arts & recreation | 2004 |
| Works in Computers Ltd | Information & communication | 2013 |
| Workspace & Storage Limited | Real estate | 2011 |
| Worktogether Limited | Health & social care | 2015 |
| Workwell Furniture Ltd | Wholesale & retail | 2020 |
| World Headquarters & NAT Turner Live Events Limited | Arts & recreation | 2017 |
| World Headquarters Nightclub Ltd | Hospitality | 2021 |
| World Sindhi Organisation Ltd | Professional & scientific | 2026 |
| World Wheel Company (Newcastle) Limited | Arts & recreation | 2017 |
| World Wind Ltd | Professional & scientific | 2025 |
| Worldclass Personnel Limited | Administrative & support | 2021 |
| Worlds Apart Software Ltd | Information & communication | 2017 |
| Worldwide Device Solutions Ltd | Professional & scientific | 2023 |
| Worthdosh Ltd | Wholesale & retail | 2025 |
| Worthyrank Property Management Limited | Hospitality | 1989 |
| WOT Knot Joinery Limited | Construction | 2025 |
| Wowsaas Ltd | Information & communication | 2024 |
| Wowu Supplies Ltd | Wholesale & retail | 2020 |
| WP FRY Ltd | Hospitality | 2024 |
| WPN Chameleon Limited | Information & communication | 2002 |