| Camscott Leisure Limited | Arts & recreation | 2003 |
| Canton House 16888 Ltd | Hospitality | 2025 |
| Canuck Estates Ltd | Real estate | 2025 |
| Cardwell Butchers Limited | Wholesale & retail | 2023 |
| Cardwell Hospitality Ltd | Hospitality | 2025 |
| Carl Eastwood Garden Services Limited | Administrative & support | 2025 |
| Carleton Autos Service Centre Ltd | Manufacturing | 2022 |
| Carleton Convenience Store Ltd | Wholesale & retail | 2026 |
| Carlitos K Limited | Wholesale & retail | 2025 |
| Carr Side Properties Limited | Real estate | 1999 |
| Carter Machinery Company Limited | Manufacturing | 2012 |
| Casa Solutions and Investments Limited | Real estate | 2020 |
| Cathedral Glass Ltd | Manufacturing | 2004 |
| Catlow Courier Services Ltd | Transport & logistics | 2024 |
| Caton Properties Ltd | Real estate | 2017 |
| Cavo PLF Ltd | Hospitality | 2022 |
| CB Prime Property Group Ltd | Real estate | 2024 |
| CC Blackpool Ltd | Hospitality | 2024 |
| CC Legal Limited | Professional & scientific | 2022 |
| Chesham & West Ltd | Real estate | 2022 |
| Chestnut House Ltd | Real estate | 2020 |
| China Red Poulton Ltd | Hospitality | 2020 |
| China Red Realty Ltd | Real estate | 2025 |
| Chris Lees Joiner & Builder Ltd | Construction | 2016 |
| Chris Morris Property Ltd | Real estate | 2024 |
| Chris Simkin Mortgages Ltd | Financial services | 2026 |
| Chris Waldie Limited | Construction | 2019 |
| Chuckles Childcare Ltd | Health & social care | 2022 |
| CJA Investment Properties Limited | Real estate | 2021 |
| CJL Accounting and Business Services Ltd | Professional & scientific | 2024 |
| CJW Plumbing & Property Ltd | Real estate | 2020 |
| CK Care Group Ltd | Public administration | 2026 |
| Clarus Insight Ltd | Information & communication | 2024 |
| Classic Car Tours International Limited | Administrative & support | 2003 |
| Climbtheweb Ltd | Information & communication | 2009 |
| CLK Properties (NW) Limited | Real estate | 2020 |
| Cloudburst Clothing Ltd | Wholesale & retail | 2021 |
| CLU Consultancy Ltd | Other services | 2019 |
| Clyde Valley Caravan Park Ltd | Hospitality | 2024 |
| CM E-Commerce Ltd | Wholesale & retail | 2023 |
| CMA and Co Holdings Ltd | Real estate | 2026 |
| CND Holdings Limited | Professional & scientific | 2022 |
| CNL Consultancies Ltd | Health & social care | 2022 |
| Coastal Quality Care Ltd | Health & social care | 2019 |
| Cold Culture Club Ltd | Wholesale & retail | 2025 |
| Collective Films Limited | Information & communication | 2005 |
| Colossus Clothing Limited | Wholesale & retail | 2024 |
| Comed Aviation Limited | Transport & logistics | 2021 |
| Comforin Limited | Professional & scientific | 2024 |
| Community Fitness Games Ltd | Arts & recreation | 2026 |
| Compuwyze Ltd | Wholesale & retail | 2023 |
| Concept for Living by Robert Pallant Designs Ltd | Wholesale & retail | 2009 |
| Connect Courier Services Ltd | Transport & logistics | 2022 |
| Connect IT (Business Services) Limited | Wholesale & retail | 1990 |
| Constructelec Ltd | Manufacturing | 2013 |
| Contracts (NW) Ltd | Construction | 2016 |
| Contrst Ltd | Manufacturing | 2025 |
| Cooper Courier Services Ltd | Transport & logistics | 2024 |
| Coppice Huts Ltd | Hospitality | 2022 |
| Copse Road Garage Limited | Wholesale & retail | 2025 |
| Corgi Holdings Limited | Real estate | 2024 |
| Cornerstone Bookkeepers Ltd | Professional & scientific | 2025 |
| Cosec UK Services Ltd | Professional & scientific | 2020 |
| Country Barns Limited | Other services | 2020 |
| Country Farm Stud Ltd | Agriculture & fishing | 2010 |
| CQ & I Services Ltd | Professional & scientific | 2022 |
| Cradle Investments Ltd | Real estate | 2023 |
| Craft and Work Limited | Administrative & support | 2026 |
| Craggs & Co. Developments Ltd | Construction | 2026 |
| Cread Consultancy Ltd | Professional & scientific | 2025 |
| Creepy Corner Ltd | Wholesale & retail | 2025 |
| Crelling Harnesses for the Disabled Limited | Manufacturing | 1997 |
| Crown Green (Poulton) Limited | Households | 2010 |
| Cube Bar Limited | Hospitality | 2001 |
| Cuckoo Land Nonesense Limited | Education | 2022 |
| Curlyns Nest Limited | Wholesale & retail | 2014 |
| CX Consultancy Services Ltd | Professional & scientific | 2025 |
| CYZ Subco Ltd | Real estate | 2021 |
| D & G Construction (Fylde) Limited | Construction | 2004 |
| D & J Trading Limited | Hospitality | 2003 |
| D B Optics Limited | Wholesale & retail | 2007 |
| D J Stores Ltd | Wholesale & retail | 2002 |
| D K C Consultancy Services Limited | Professional & scientific | 2007 |
| D Thomason Limited | Professional & scientific | 2019 |
| D Thornton Properties Ltd | Real estate | 2024 |
| Dairyfresh Premier Ltd | Wholesale & retail | 2018 |
| Daisy Pantry Ltd | Wholesale & retail | 2025 |
| Dalvee Limited | Hospitality | 2018 |
| DAN Wootton Photography Ltd | Professional & scientific | 2013 |
| Danrick Property Ltd | Real estate | 2024 |
| Data Mage Limited | Information & communication | 2017 |
| David J Robinson Builders Ltd | Construction | 2016 |
| Davis Family Daycare Ltd | Health & social care | 2025 |
| DB Consulting (North East) Ltd | Professional & scientific | 2007 |
| DC Distributions Sales Ltd | Wholesale & retail | 2025 |
| DE LA MER Productions Ltd | Information & communication | 2025 |
| Deadbeats Partyband Limited | Arts & recreation | 2025 |
| Debt Logic Ltd | Administrative & support | 2017 |
| Decol Ltd | Construction | 2012 |
| Dedrendr Ltd | Information & communication | 2024 |