| Weatherseal Windows North Ltd | Construction | 2025 |
| Weave Creative Productions C.I.C. | Health & social care | 2020 |
| Weaver, Buckworth & Partners | Professional & scientific | 1979 |
| Weavers Garage Limited | Wholesale & retail | 2005 |
| Weavers Mill Developments Ltd | Construction | 2020 |
| Weavers Mill Investments Ltd | Real estate | 2020 |
| Web Chat Live Limited | Professional & scientific | 2016 |
| Web Investments Limited | Other services | 2021 |
| Web Juice Ltd | Information & communication | 2014 |
| Web Monkeys Ltd | Administrative & support | 2022 |
| Webb Designs Limited | Wholesale & retail | 2018 |
| Webb Education and Coaching Ltd | Information & communication | 2024 |
| Webb Export Ltd | Transport & logistics | 2019 |
| Webbe Property Services Ltd | Real estate | 2025 |
| Webblox Construction Ltd | Construction | 2025 |
| Webbprint Ltd | Manufacturing | 2023 |
| Webbs Lettings Limited | Real estate | 2016 |
| Webchain Solutions Ltd | Information & communication | 2023 |
| Weber & Weber Limited | Real estate | 2020 |
| Webgeometry Ltd | Information & communication | 2014 |
| Webizzy Limited | Information & communication | 2011 |
| Webloyalty Sarl Ltd | Wholesale & retail | 2025 |
| Webpoint LAB Limited | Information & communication | 2025 |
| Webrass Consumer PVT Limited | Hospitality | 2024 |
| Webster Financial Consultancy Limited | Administrative & support | 2013 |
| Webster Klahr Limited | Professional & scientific | 2022 |
| Wecomeone Money Limited | Professional & scientific | 2009 |
| Wedcova Europe Ltd | Wholesale & retail | 2026 |
| Wedcova UK Ltd | Wholesale & retail | 2019 |
| Weddington Sheet Metal Works Limited | | 1954 |
| Wednesday Group UK Ltd | Wholesale & retail | 2025 |
| Wedoitall Ltd | Administrative & support | 2021 |
| Wedwithelegance Limited | Administrative & support | 2024 |
| Weee Services Limited | Transport & logistics | 2017 |
| Wefulfilluk Limited | Transport & logistics | 2023 |
| Wego Medical UK Limited | Wholesale & retail | 2023 |
| Weightru Holdings Ltd | Other services | 2016 |
| Weightru Limited | Other services | 2009 |
| Weks Ltd | Health & social care | 2023 |
| WEL Electrical Ltd | Manufacturing | 2026 |
| Welbeck House Limited | Manufacturing | 2000 |
| Welbeck Strategic Land III Limited | Professional & scientific | 2017 |
| Welbilt Logistics Ltd. | Transport & logistics | 2024 |
| Welcome Button Service Limited | Manufacturing | 2008 |
| Welcome Digital Ltd | Information & communication | 2026 |
| Welcome Facilities & Services Limited | Transport & logistics | 2023 |
| Welcome Superstore Limited | Wholesale & retail | 2018 |
| Welcome to Your New Home Ltd | Real estate | 2024 |
| Welcometoanicca Ltd | Wholesale & retail | 2024 |
| WELD55 Fabrication Ltd | Manufacturing | 2019 |
| Weldon Park (Apartments) Residents Management Company Limited | Households | 2025 |
| Weldpress Ltd | Manufacturing | 2019 |
| Welford 8 Limited | Financial services | 2025 |
| Welford Bar and Grill Limited | Hospitality | 2012 |
| Welford Bidco 11 Limited | Hospitality | 2026 |
| Welford Bidco 12 Limited | Hospitality | 2026 |
| Welford Bidco 13 Limited | Health & social care | 2026 |
| Welford Bidco 14 Limited | Financial services | 2026 |
| Welford Bidco 3 Limited | Health & social care | 2021 |
| Welford Bidco 4 Limited | Health & social care | 2022 |
| Welford Bidco 6 Limited | Health & social care | 2022 |
| Welford Cars UK Ltd | Wholesale & retail | 2024 |
| Welford CHH Topco Ltd | Financial services | 2024 |
| Welford Coinop Ltd | Construction | 2024 |
| Welford Court Limited | Health & social care | 1998 |
| Welford Derby Land Limited | Construction | 2026 |
| Welford FH Limited | Financial services | 2025 |
| Welford FH Operations Limited | Real estate | 2026 |
| Welford FH Topco Limited | Financial services | 2026 |
| Welford Healthcare CHH Ltd | Financial services | 2021 |
| Welford Healthcare Hampshire Limited | Health & social care | 2024 |
| Welford Healthcare Ltd | Financial services | 2015 |
| Welford Healthcare MC Ltd | Health & social care | 2022 |
| Welford Healthcare South Limited | Health & social care | 2024 |
| Welford Healthcare South Topco Limited | Financial services | 2024 |
| Welford Healthcare STH Limited | Health & social care | 2021 |
| Welford Holdings Ltd | Financial services | 2026 |
| Welford Key Worker Housing Limited | Real estate | 2021 |
| Welford Laundrette Ltd | Other services | 2025 |
| Welford Motors Leics Ltd | Wholesale & retail | 2026 |
| Welford Properties (Leics) Ltd | Households | 2017 |
| Welford Property Management Limited | Real estate | 2016 |
| Welford Restaurant Limited | Hospitality | 2016 |
| Welford Road Leicester Partnership Limited | Construction | 2015 |
| Welford Road Leics Ltd | Wholesale & retail | 2024 |
| Welford Road Ltd | Wholesale & retail | 2025 |
| Welford Road Stores Limited | Wholesale & retail | 2022 |
| Welford ST Albans Ltd | Health & social care | 2023 |
| Welford Topco Limited | Financial services | 2015 |
| Welfordchippy Limited | Hospitality | 2024 |
| Welham Diesel Injection Company Limited | Manufacturing | 1964 |
| Welham Motor Company Limited | Wholesale & retail | 1957 |
| Well Bright Care Services Ltd | Construction | 2022 |
| Well Done Mattresses Leics Ltd | Manufacturing | 2025 |
| Well Nice Projects Limited | Professional & scientific | 2021 |
| Well Snack Ltd | Hospitality | 2025 |
| Well Warm Plumbing and Heating Ltd | Construction | 2015 |
| Well-Tailored Consulting Ltd | Information & communication | 2019 |
| Welland Print Limited | Manufacturing | 2001 |
| Welland Vale (Holdings) Limited | Financial services | 2012 |