| Camtol Ltd | Professional & scientific | 2012 |
| Canvas Coffee Company Limited | Hospitality | 2019 |
| Car 2 Go Ltd | Wholesale & retail | 2024 |
| Carolink Limited | Information & communication | 2018 |
| Carpet Factory Frome Limited | Wholesale & retail | 2018 |
| Carryer Permitting and Environmental Ltd. | Professional & scientific | 2015 |
| Cat Industries Limited | Wholesale & retail | 2016 |
| Cdlp Limited | Professional & scientific | 2015 |
| CDN Construction Ltd | Construction | 2021 |
| Century INK Ltd | Arts & recreation | 2022 |
| Cerebra Limited | Health & social care | 2007 |
| Ceres Consulting Limited | Administrative & support | 2017 |
| Chaat Cart Food Halls Ltd | Hospitality | 2020 |
| Champion Design Ltd | Professional & scientific | 2017 |
| Charlie Lambert Smith Ltd | Construction | 2022 |
| Charlie Marshall Ltd | Professional & scientific | 2018 |
| Charlton Vale Software Ltd | Information & communication | 2015 |
| Chase Partners Limited | Professional & scientific | 2011 |
| Chez Energy Ltd | Construction | 2023 |
| Chillim Limited | Hospitality | 2015 |
| Chris Beier Associates Ltd | Construction | 2018 |
| Chris Dellaca Consulting Limited | Professional & scientific | 2019 |
| Chrislaug Ltd | Real estate | 2018 |
| Church Street Studios Ltd | Health & social care | 2017 |
| Circlelet Properties Limited | Hospitality | 2018 |
| Cistm Ltd | Professional & scientific | 2003 |
| Cloudera Consulting Limited | Information & communication | 2022 |
| Cloudylime Consulting Limited | Information & communication | 2014 |
| CMG Leisure Limited | Manufacturing | 2014 |
| Cmym Consulting Limited | Professional & scientific | 2022 |
| Code Completion Ltd | Information & communication | 2019 |
| Cognosco Consulting Ltd | Information & communication | 2017 |
| Colajo Ltd | Wholesale & retail | 2020 |
| Collingwood Catering Ltd | Hospitality | 2022 |
| Constable Group Ltd | Professional & scientific | 2016 |
| Consultants PAR Excellence Limited | Information & communication | 2011 |
| Control CAD Limited | Administrative & support | 2012 |
| Corallium Consulting Ltd | Information & communication | 2018 |
| Coremed Limited | Health & social care | 2019 |
| Correct Electrical Services Limited | Construction | 2015 |
| Cowthorpe Oak Furniture Ltd | Wholesale & retail | 2013 |
| Crafty PIG Designs Limited | Manufacturing | 2013 |
| Creative Rooms Development Ltd | Construction | 2012 |
| Croft Aerospace Ltd | Professional & scientific | 2015 |
| Crystal Imprints Ltd | Wholesale & retail | 2014 |
| CS Clapham Ltd | Hospitality | 2019 |
| CSS Partners LLP | | 2005 |
| CTA Field Services Limited | Professional & scientific | 2005 |
| Curry Mahal UK Ltd | Hospitality | 2019 |
| Customise Kitchens Limited | Wholesale & retail | 2014 |
| CX Vision Ltd | Administrative & support | 2023 |
| Cyb-Int Ltd | Information & communication | 2021 |
| D Lavender Editing Limited | Information & communication | 2016 |
| D M D Enterprises Ltd | Information & communication | 2015 |
| D&C Legal Consultants Ltd | Professional & scientific | 2017 |
| D.C. Manyweathers & Co. Limited | Construction | 2003 |
| D.Daniels Power Solutions Limited | Administrative & support | 2019 |
| D2D Distributors Ltd | Wholesale & retail | 2006 |
| Daawat Foods Limited | Wholesale & retail | 2022 |
| Dack Pearson and Company Ltd. | Professional & scientific | 2019 |
| Dafo Consulting Ltd | Information & communication | 2017 |
| Daran GP Ltd. | Professional & scientific | 2019 |
| Daranden Limited | Administrative & support | 2000 |
| Daringly Digital Limited | Information & communication | 2022 |
| Darling and Edge Limited | Professional & scientific | 2015 |
| Darren Fordham Decorating Limited | Construction | 2019 |
| Datascope Consulting Limited | Professional & scientific | 2023 |
| David Stanbridge Ltd. | Construction | 2013 |
| DB Search Ltd | Administrative & support | 2021 |
| DCJ Connected Solutions Ltd. | Information & communication | 2007 |
| Dennis Travel Limited | Administrative & support | 2019 |
| DER Automotive Engineering Limited | Administrative & support | 2011 |
| Deriu Consulting Ltd | Financial services | 2019 |
| Desarchi Ltd | Professional & scientific | 2016 |
| Desiderata Consulting Limited | Information & communication | 2014 |
| Designed Mechanical Solutions Limited | Wholesale & retail | 2013 |
| Deva Statistical Consulting Limited | Information & communication | 2005 |
| Developing Network Systems Limited | Information & communication | 1997 |
| Devon Building and Groundworks Ltd | Construction | 2021 |
| Devops Transformations Limited | Information & communication | 2020 |
| DFW Pharma Consulting Limited | Health & social care | 2016 |
| Diamond Rebates Ltd | Professional & scientific | 2022 |
| Digi House Ltd | Hospitality | 2014 |
| Digital Wellbeing Limited | Other services | 2014 |
| Direct Interiors Southern Ltd | Construction | 2019 |
| Direct Motorhome Services Limited | Wholesale & retail | 2017 |
| Diyana Ltd | Health & social care | 2012 |
| DMG Data Consulting Limited | Information & communication | 2023 |
| Doit Cloud Limited | Information & communication | 2014 |
| Doubly Good Ltd | Information & communication | 2020 |
| Douglas Project Solutions Ltd | Professional & scientific | 2021 |
| DPL Finance Projects Ltd | Administrative & support | 2013 |
| Dream Oyster Limited | Other services | 2018 |
| DRJ Software Limited | Information & communication | 1997 |
| Durnsford Lodge Limited | Health & social care | 2015 |
| DWT Site Management Ltd | Administrative & support | 2022 |
| Dynamicnutritionacademy Ltd | Health & social care | 2018 |
| E M Designs Limited | Other services | 2008 |
| E7 Dog Services Ltd | Professional & scientific | 2024 |
| Earthbits Ltd | Wholesale & retail | 2019 |