| Busina Limited | Professional & scientific | 2022 |
| Business Assist Midlands Limited | Professional & scientific | 2012 |
| Business Communication Systems Ltd | Information & communication | 2024 |
| Business Mastermind Group Ltd | Professional & scientific | 2025 |
| Bustan Limited | Real estate | 2025 |
| Busy BEE Cake House Limited | Hospitality | 2015 |
| Busy Bees Property Ltd | Extraterritorial | 2019 |
| Bute ST4 Ltd | Real estate | 2024 |
| Butt Lane Healthcare Limited | Health & social care | 2011 |
| Buttercup Bakehouse Ltd | Wholesale & retail | 2025 |
| Buttercup China Ltd | Wholesale & retail | 2009 |
| Butterley Barn Interiors Limited | Wholesale & retail | 2013 |
| Butterworth Electrical Solutions Ltd | Construction | 2017 |
| Buxton Transport Services (BTS) Ltd | Wholesale & retail | 2025 |
| Buynova Ltd | Wholesale & retail | 2025 |
| Buzuliuc Ltd Ltd | Transport & logistics | 2025 |
| Bvapes Ltd | Extraterritorial | 2024 |
| Bvgrp Ltd | Financial services | 2023 |
| BVR Automotive Limited | Wholesale & retail | 2015 |
| BW Express Transport Ltd | Transport & logistics | 2025 |
| Bwar Limited | Information & communication | 2014 |
| BWC (Kidsgrove) Limited | Professional & scientific | 2010 |
| BWC - Booth Willis Consultancy Limited | Professional & scientific | 2025 |
| Bxxoffice Ltd | Information & communication | 2025 |
| Byerg Ltd | Wholesale & retail | 2025 |
| Bynova Ltd | Wholesale & retail | 2025 |
| Byssy Medical Ltd | Wholesale & retail | 2020 |
| Bzinyemba Locums Limited | Professional & scientific | 2016 |
| C & D Lees Properties Ltd | Real estate | 2021 |
| C & G Newbon Ltd | Wholesale & retail | 2018 |
| C & GC Consultancy Limited | Administrative & support | 2016 |
| C & K Sandwich Makers Limited | Hospitality | 2020 |
| C & S Catering Ltd | Hospitality | 2025 |
| C a L Mechanical Engineering Limited | Construction | 2014 |
| C B Ductwork Services Limited | Construction | 2010 |
| C B Property Management Ltd | Real estate | 2006 |
| C Bounford and J Jennings Garages Ltd | Wholesale & retail | 2026 |
| C Brundrett Builders Limited | Construction | 2006 |
| C D & J Boilers Limited | Construction | 2016 |
| C D & J Tanks Ltd | Manufacturing | 2016 |
| C D Vernon Limited | Real estate | 2004 |
| C Duffy Property Ltd | Real estate | 2025 |
| C G Electrics Limited | Construction | 2005 |
| C G Supplies Limited | Wholesale & retail | 2011 |
| C J Motors (Stoke) Ltd | Wholesale & retail | 2021 |
| C K Caravans Ltd | Administrative & support | 2006 |
| C Knapper Groundworks Limited | Construction | 2018 |
| C L Floor Care Limited | Other services | 2008 |
| C L Property Care Ltd | Real estate | 2022 |
| C M Forse Holdings Limited | Real estate | 2020 |
| C M Rowlinson Limited | Agriculture & fishing | 2004 |
| C N L Maintenance Limited | Manufacturing | 2025 |
| C N Properties (Staffs) Limited | Real estate | 2024 |
| C P Homes Ltd | Real estate | 2025 |
| C P Smith Limited | Administrative & support | 2025 |
| C Private Ltd | Transport & logistics | 2018 |
| C Q Plant Operator Services Limited | Construction | 2017 |
| C R Barman (Alton) Ltd | Hospitality | 2023 |
| C R Plumbing Services Ltd | Construction | 2012 |
| C Smith Plumbing Heating and GAS Services Limited | Construction | 2018 |
| C T Management Limited | Real estate | 2011 |
| C T Metering Services Ltd | Construction | 2012 |
| C W Mottram Funeral Services Ltd | Other services | 2012 |
| C&C Driving Services Ltd | Transport & logistics | 2019 |
| C&D Spedition Limited | Transport & logistics | 2018 |
| C&F Services Ltd | Transport & logistics | 2017 |
| C&J Thermal Insulations Ltd | Construction | 2026 |
| C&L Business Solution Ltd | Transport & logistics | 2022 |
| C&L Properties and Investments Ltd | Real estate | 2019 |
| C&M Distribution Ltd | Wholesale & retail | 2019 |
| C&R Technical Support Ltd | Wholesale & retail | 2019 |
| C-L Munn Utilities Limited | Energy | 2024 |
| C. and K. Precision Engineers Limited | Manufacturing | 1984 |
| C. Dale Joinery Ltd | Construction | 2005 |
| C. H. Gore Haulage Limited | Transport & logistics | 2009 |
| C. P. Heaton Builders Limited | Construction | 2017 |
| C.B.O. Transport Ltd. | Professional & scientific | 2011 |
| C.E.F. Property Solutions Ltd | Construction | 2018 |
| C.E.H Logistics Ltd | Transport & logistics | 2011 |
| C.I.D Electrical (SOT) Limited | Construction | 2014 |
| C.J. Leigh Travel Limited | Administrative & support | 1971 |
| C.L.Ratcliffe Ltd | Hospitality | 2025 |
| C.M.C. Lighting Limited | Construction | 2016 |
| C.M.L. Properties Limited | Real estate | 2011 |
| C.M.W Cladding & Roofing Ltd | Construction | 2013 |
| C.R.G. Limited | Real estate | 2012 |
| C.R.Galloway Ltd | Administrative & support | 2019 |
| C.Turk Services Ltd | Construction | 2023 |
| C.W.Cleaning Solutions Ltd | Other services | 2021 |
| C.Wheawall Ltd | Professional & scientific | 2002 |
| C2 Construction & Fabrication Ltd | Manufacturing | 2023 |
| C2 Flooring Ltd | Construction | 2023 |
| C2 Properties Nationwide Limited | Real estate | 2020 |
| C2C Consulting Engineers Limited | Professional & scientific | 2017 |
| CA Select Limited | Administrative & support | 2018 |
| Cabability Ltd | Transport & logistics | 2016 |
| Cabability Plus Limited | Transport & logistics | 2023 |
| Cabbee Mobility Ltd | Transport & logistics | 2026 |
| Cable Detection Limited | Manufacturing | 2000 |
| CAC Electrical Contractors Ltd | Construction | 2024 |