| Wood's Project Consultancy Ltd | Professional & scientific | 2025 |
| Woodpecker Trees Ltd | Agriculture & fishing | 2018 |
| Woolly North Consulting Limited | Other services | 2010 |
| Wootton Forestry & Powerline Services Limited | Agriculture & fishing | 2023 |
| Workforce Trading Limited | Wholesale & retail | 2018 |
| World Bread Awards Limited | Administrative & support | 2012 |
| WOW Worthy Women Community Interest Company | Other services | 2022 |
| Wowvita Ltd | Wholesale & retail | 2024 |
| Wpah Services Ltd | Administrative & support | 2018 |
| Wragby Management Company Limited | Households | 2014 |
| Wrights of Willingham Limited | Hospitality | 2020 |
| WSS Construction Ltd | Professional & scientific | 2023 |
| WTN Construction Ltd | Construction | 2026 |
| Wynne Site Services Ltd | Construction | 2023 |
| XTG Hairdressing Limited | Wholesale & retail | 2006 |
| Yetti Environmental UK Limited | Professional & scientific | 2017 |
| YM Bakery Ltd | Manufacturing | 2024 |
| York Road TN1 Ltd | Real estate | 2019 |
| Your Services Lincolnshire Limited | Professional & scientific | 2010 |
| Your Story Content Creation Ltd | Professional & scientific | 2024 |
| Zeebizco Limited | Information & communication | 2016 |
| Zeta Thomas Collective Ltd | Professional & scientific | 2026 |
| Zidan Motor Group Limited | Wholesale & retail | 2019 |
| Zorin Industries Ltd | Manufacturing | 2024 |