| Universal Web Development Limited | Education | 2013 |
| Universaldeck Ltd | Construction | 2024 |
| University of Essex International College Limited | Education | 2017 |
| University of Essex Knowledge Gateway Limited | Construction | 2002 |
| Unjiya Ltd | Health & social care | 2025 |
| Unleashed.Dog Ltd | Manufacturing | 2013 |
| Unlimited Ideas Limited | Wholesale & retail | 2026 |
| Unlimited Trading Ltd | Wholesale & retail | 2025 |
| Unlock Mode Limited | Professional & scientific | 2018 |
| Unlockd Group Ltd | Arts & recreation | 2026 |
| Unoriginal & Co Ltd | Construction | 2026 |
| Unreal Beer Ltd | Wholesale & retail | 2022 |
| Until WE GET Lost Limited | Real estate | 2025 |
| Untoldagenda Ltd | Wholesale & retail | 2026 |
| Unusual Plants Limited | Professional & scientific | 1988 |
| Unwin Business Coaching Limited | Professional & scientific | 2009 |
| UP Digital Ltd | Professional & scientific | 2025 |
| Upaci Technologies Limited | Information & communication | 2021 |
| Uplift Projects Ltd | Real estate | 2024 |
| Uplyft Official Ltd | Wholesale & retail | 2026 |
| Upper Bound Tuition Ltd | Education | 2025 |
| Upper Park Trading Limited | Financial services | 2010 |
| Uptime-It Limited | Administrative & support | 2004 |
| Upway Services Limited | Administrative & support | 2020 |
| UR Glow Ltd | Other services | 2025 |
| Ur's Consultancy Limited | Health & social care | 2019 |
| Urban Beauty Colchester Ltd | Other services | 2024 |
| Urban Cyclist Limited | Wholesale & retail | 2022 |
| Urban Edge Management Limited | Other services | 2015 |
| Urban Lite Ltd | Construction | 2023 |
| Urban Xtreme Ltd | Arts & recreation | 2022 |
| Urinal Solutions Limited | Professional & scientific | 2018 |
| Urithan Ltd | Health & social care | 2026 |
| Uroboros Limited | Health & social care | 2023 |
| Usama Iqbal Ltd | Wholesale & retail | 2026 |
| USED4TURF Ltd | Wholesale & retail | 2021 |
| User One SBS Limited | Other services | 2000 |
| Ushine Ishine Ltd | Information & communication | 2010 |
| Usman’S Kitchen Ltd | Hospitality | 2021 |
| Utility Installation Projects Limited | Construction | 2002 |
| Utility Solutions (UK) Ltd | Energy | 2011 |
| Utility Welding Limited | Manufacturing | 2022 |
| Uttlesford NO 1 Ltd | Construction | 2025 |
| UV Systems Ltd | Professional & scientific | 2021 |
| UX Property Solutions Ltd | Real estate | 2026 |
| Uzukwu Emmanuel Limited | Professional & scientific | 2013 |
| V a J Developments Ltd | Construction | 2023 |
| V Care 24 / 7 Ltd | Health & social care | 2019 |
| V&J Renovations Limited | Construction | 2020 |
| V&J UK Ltd | Wholesale & retail | 2018 |
| V2 Investments Ltd | Real estate | 2026 |
| V2P2 Properties Ltd | Real estate | 2025 |
| V3 Data Consultant Ltd | Other services | 2021 |
| VA Shop Ltd | Wholesale & retail | 2022 |
| Vailski Limited | Real estate | 2006 |
| Vaina Analytics Limited | Information & communication | 2022 |
| Vaina Investments Limited | Financial services | 2023 |
| Vaina Ltd | Real estate | 2021 |
| Vaish Property Solutions Limited | Real estate | 2018 |
| Vale Capital Ltd | Financial services | 2022 |
| Vale Properties East Anglia Ltd | Real estate | 2021 |
| Valentine Building Associates Ltd | Construction | 2019 |
| Valeting & Detail Ltd | Other services | 2024 |
| Validaspect Limited | Professional & scientific | 1992 |
| Vallance Assessment Services Ltd | Health & social care | 2007 |
| Valley Graphics and Conversions Ltd | Manufacturing | 2019 |
| Valley Park (Dovercourt) Management Company Limited | Professional & scientific | 2004 |
| Valley Sales and Marketing Limited | Hospitality | 2015 |
| Valmor Consulting Limited | Professional & scientific | 2026 |
| Value Vehicles Essex Ltd | Wholesale & retail | 2023 |
| Valunation Limited | Professional & scientific | 2007 |
| Van Cols Limited | Professional & scientific | 1964 |
| Van Dyck House Limited | Real estate | 2018 |
| Van Life Competitions Ltd | Wholesale & retail | 2022 |
| Van Life Supplies Ltd | Other services | 2024 |
| Van Trade Direct Limited | Wholesale & retail | 2016 |
| Vanbrugh Properties Limited | Construction | 2020 |
| Vanderberg Ltd | Manufacturing | 2020 |
| Vanesa a Ltd | Wholesale & retail | 2024 |
| Vanguard Racing Ltd | Arts & recreation | 2026 |
| Vani Malik Consulting Ltd | Professional & scientific | 2025 |
| Vanlife Conversions Ltd | Manufacturing | 2019 |
| Vantage Strategy Solutions Ltd | Professional & scientific | 2024 |
| Varenty Ltd | Administrative & support | 2026 |
| Vargr Limited | Professional & scientific | 2020 |
| Variest Ltd | Wholesale & retail | 2026 |
| Varsity Training Limited | Education | 2015 |
| Varyn Ltd | Information & communication | 2026 |
| Vasantha Ltd | Health & social care | 2026 |
| Vasco Global Limited | Wholesale & retail | 2025 |
| Vaughan & Blyth (Construction) Limited | Construction | 1999 |
| Vaughan & Blyth Limited | Construction | 1953 |
| Vaughan Holdings Limited | Administrative & support | 1998 |
| Vaultage Limited | Information & communication | 2026 |
| Vazgro Ltd | Information & communication | 2024 |
| Vcard ME Ltd | Information & communication | 2022 |
| VCB Copy Limited | Administrative & support | 2011 |
| VCS Websites Ltd | Information & communication | 2015 |
| Vebaul Ltd | Wholesale & retail | 2022 |
| Veda Properties Ltd | Real estate | 2021 |