| Cross Talk (Accounts) Limited | Professional & scientific | 2001 |
| Crossort Ltd | Professional & scientific | 2022 |
| Crosstalk Sales Ltd | Professional & scientific | 2024 |
| Crowfoot Holdings Limited | Financial services | 2019 |
| Crown Butchers (Stourbridge) Ltd | Wholesale & retail | 2025 |
| Crown Hearing Centres LLP | | 2017 |
| Crownautos&Logistics Ltd | Transport & logistics | 2025 |
| Crowngate Property Group Limited | Real estate | 2026 |
| Crumb AS YOU ARE Limited | Hospitality | 2025 |
| Cruto Ltd | Extraterritorial | 2024 |
| CRV Avoncroft Limited | Professional & scientific | 2004 |
| Cryo RS Physiotherapy Ltd | Health & social care | 2015 |
| Crystal Balti Food and Catering Ltd | Hospitality | 2017 |
| Crystal Flowers (Wordsley) Limited | Wholesale & retail | 2018 |
| Crystal Valeting and Detailing Center Ltd | Administrative & support | 2025 |
| Crystalise Limited | Real estate | 2001 |
| CS Bookkeeping Services (Midlands) Limited | Professional & scientific | 2019 |
| CS Compliance Services Ltd | Professional & scientific | 2017 |
| Cshaw Property Limited | Construction | 2024 |
| CSW Investments Limited | Real estate | 2016 |
| CTI Common Technic Industrial Maintenance Repair and Consultancy Ltd | Manufacturing | 2020 |
| Cubralco Limited | Wholesale & retail | 1995 |
| Culpeper Care Limited | Health & social care | 1985 |
| Cunneen & Dawes Utilities Limited | Construction | 2010 |
| Cupboards Direct (2018) Limited | Wholesale & retail | 2018 |
| Cure Electrical Services Limited | Construction | 2005 |
| Curtis Greyson Limited | Manufacturing | 2025 |
| Curtis INV Ltd | Real estate | 2020 |
| Custom Acoustics Limited | Wholesale & retail | 2015 |
| Customark (Oxfordshire) Ltd | Manufacturing | 1996 |
| Customark Limited | Manufacturing | 2006 |
| Customside Ltd | Wholesale & retail | 2026 |
| CUT Build Finishing Services Ltd | Manufacturing | 2022 |
| Cutting & Welding Supplies Limited | Wholesale & retail | 1968 |
| Cyber Online Sales Limited | Wholesale & retail | 2017 |
| Cygnet Distillery Ltd | Administrative & support | 2023 |
| Cyphertech Limited | Manufacturing | 1987 |
| D & J Accountants Limited | Professional & scientific | 2020 |
| D & J Park Homes Limited | Hospitality | 2026 |
| D Boscott Limited | Hospitality | 2025 |
| D J Price Brickwork Limited | Construction | 2016 |
| D Millington Ltd | Professional & scientific | 2013 |
| D Modell Properties Ltd | Manufacturing | 2018 |
| D Modell Rentals Limited | Real estate | 2025 |
| D R Mechanical Holdings Limited | Real estate | 2022 |
| D&G Meats (Birmingham) Ltd | Wholesale & retail | 2019 |
| D&M Asbestos Removal Ltd | Water & waste | 2024 |
| D&P Estate Properties Limited | Real estate | 2025 |
| D-Lapse Limited | Professional & scientific | 2009 |
| D.D.J.A Holdings Ltd | Financial services | 2023 |
| D.G. 2 Limited | Professional & scientific | 1978 |
| D.R.L Electrical Ltd | Manufacturing | 2020 |
| Dabu Studios Limited | Wholesale & retail | 2025 |
| DAD Estates Ltd | Real estate | 2015 |
| Daft Punked Limited | Wholesale & retail | 2025 |
| Dain Property Solutions Ltd | Construction | 2021 |
| Daisy Barrett-Nash Ltd | Education | 2025 |
| Daisy Supreme Care Ltd | Hospitality | 2022 |
| Daisy Village Ltd. | Wholesale & retail | 2006 |
| Dalloway Precision Engineering Ltd | Manufacturing | 2005 |
| Daman Developments Ltd | Construction | 2020 |
| DAN Leyshon Ltd | Real estate | 2019 |
| DAN Off-Licence Ltd | Wholesale & retail | 2025 |
| DAN Thorpe Guitar Limited | Education | 2021 |
| Dance Rocks Jewellery Ltd | Wholesale & retail | 2010 |
| Dance-X-Treme Holidays Limited | Administrative & support | 2018 |
| Dancop (UK) Limited | Wholesale & retail | 1992 |
| Daniel James Photography Limited | Professional & scientific | 2007 |
| Daniel Wicks Ltd | Financial services | 2024 |
| Dannor Limited | Information & communication | 1997 |
| Dark Star Natural Products Ltd. | Manufacturing | 2004 |
| Darkside Tanning & Beauty Ltd | Other services | 2017 |
| Darren Bunch Hairdressing Limited | Other services | 2017 |
| Darren Kiernan Ltd | Financial services | 2022 |
| Dart Inn Ltd | Hospitality | 2025 |
| Darting Promotions Limited | Arts & recreation | 2018 |
| Data Burst Limited | Information & communication | 2025 |
| Data Compliance Limited | Information & communication | 2015 |
| Datahub Consultancy Limited | Information & communication | 2019 |
| Dataryxys Ltd | Information & communication | 2026 |
| Dataz Steel Fabrication Ltd | Manufacturing | 2014 |
| Datum Systems Ltd | Manufacturing | 2012 |
| Davenport Hadley LLP | | 2021 |
| Davenreed Limited | Professional & scientific | 1977 |
| David's Deli U.K. Ltd | Hospitality | 2023 |
| Davies Designs & Engineering Ltd | Professional & scientific | 2010 |
| Davies Holdings Midlands Limited | Financial services | 2015 |
| Davies Lettings Midlands Limited | Real estate | 2018 |
| Davlis Investments Limited | Financial services | 2020 |
| Davsol Ltd | Manufacturing | 2025 |
| Dawn Carradine Inett Limited | Agriculture & fishing | 2024 |
| DB Drainage, Groundworks and Civils Ltd | Water & waste | 2017 |
| DB2 Solutions Limited | Professional & scientific | 2013 |
| DBL Construction (Midland) Limited | Construction | 2017 |
| DBM Concepts Limited | Professional & scientific | 2014 |
| Dbomcs Ltd | Other services | 2018 |
| DBR Wordsley Ltd | Hospitality | 2018 |
| DC Hardy Dog Grooming Ltd | Wholesale & retail | 2024 |
| Ddewett Electrical Ltd | Construction | 2022 |
| DE LA MAR Fish&Chips Limited | Hospitality | 2023 |