| Cathedral Stationery Ltd | Administrative & support | 2009 |
| Cathedral Surfacing Ltd | Construction | 2024 |
| Catherine Caldwell Education Consultancy Limited | Education | 2016 |
| Cathy G Limited | Health & social care | 2025 |
| Cathy Wood Limited | Professional & scientific | 2026 |
| Catlow Leisure Limited | Hospitality | 2010 |
| Cato Trading Limited | Professional & scientific | 2006 |
| Cavalle & Co Ltd | Real estate | 2025 |
| Cave Formation Ltd | Financial services | 2024 |
| Cave Gear Ltd | Health & social care | 2024 |
| Cave Gym Group Ltd | Health & social care | 2024 |
| Cave Lincoln Ltd | Health & social care | 2024 |
| Caveman Gifts Limited | Wholesale & retail | 2021 |
| Cavill Communications Limited | Information & communication | 2015 |
| Cawdro Ltd | Construction | 2026 |
| Caztac Ltd | Professional & scientific | 2016 |
| CB & MN Holdings Ltd | Wholesale & retail | 2021 |
| CB Lincs Property Ltd | Real estate | 2019 |
| CB Plumbing & Heating Services Ltd | Construction | 2025 |
| CB Roofing Services Ltd | Construction | 2015 |
| CB Spedition Ltd | Transport & logistics | 2018 |
| CBA Medical Ltd | Health & social care | 2010 |
| CBH Construction Ltd | Construction | 2008 |
| CBM Will Writers Ltd | Professional & scientific | 2024 |
| CBS Managed Print Limited | Administrative & support | 2003 |
| CBW Transport Ltd | Transport & logistics | 2017 |
| CC Contractors (Holdings) Limited | Professional & scientific | 2008 |
| CCD Group Limited | Professional & scientific | 2016 |
| CD and G Developments Limited | Wholesale & retail | 2007 |
| CDB Property Ltd | Construction | 2026 |
| CDC Construction Consultants Ltd | Professional & scientific | 2024 |
| CDM Design Solutions Ltd | Professional & scientific | 2014 |
| Cebs Property Limited | Real estate | 2018 |
| Cedar Construction (Lincoln) Limited | Construction | 2009 |
| Cedar Farm Developments Limited | Energy | 2007 |
| Cedar Farm Services Limited | Professional & scientific | 1999 |
| Cedar Parc Limited | Real estate | 2017 |
| Cedar Project Bidco Limited | Administrative & support | 2017 |
| Cedar Project Holdco Limited | Administrative & support | 2017 |
| Cedar Project Midco Limited | Administrative & support | 2017 |
| Cedot Design Ltd | Professional & scientific | 2025 |
| Celami Investment Ltd | Real estate | 2023 |
| CELESTE7 Ltd | Information & communication | 2025 |
| CEN Coutts Limited | Wholesale & retail | 2005 |
| Centaur Sporting Academy Ltd | Arts & recreation | 2025 |
| Central Musculoskeletal Imaging Ltd | Health & social care | 2012 |
| Central Plumbing & Heating Limited | Construction | 2015 |
| Central Property Lincoln Ltd | Real estate | 2025 |
| Central Wellness Lincoln Community Interest Company | Other services | 2023 |
| Centredtherapies Ltd | Other services | 2021 |
| Centrillio Limited | Information & communication | 2019 |
| Centrix Group Limited | Wholesale & retail | 2026 |
| CEO Haulage Transport Ltd | Transport & logistics | 2024 |
| Cersei Consulting Limited | Professional & scientific | 2025 |
| Cerus Limited | Information & communication | 2018 |
| Cerven Ltd | Transport & logistics | 2024 |
| Ceto UK Limited | Wholesale & retail | 2009 |
| Ceylon Spice Corner Ltd | Hospitality | 2025 |
| CF1 Media Ltd | Information & communication | 2011 |
| CF4 Limited | Arts & recreation | 2012 |
| CFG Technical Limited | Administrative & support | 2018 |
| CFJ Management Limited | Administrative & support | 2015 |
| CFS Group Ventures Ltd | Financial services | 2026 |
| CG Vision Consultancy Ltd | Information & communication | 2025 |
| Cgrsl Limited | Construction | 2022 |
| CH Compliance Services Limited | Public administration | 2025 |
| Chad Varah Freehold Limited | Real estate | 2021 |
| Chadway Ltd | Information & communication | 1992 |
| Chainsaw Sculpture Limited | Arts & recreation | 2010 |
| Chalk Property Management Limited | Real estate | 2024 |
| Chall Investments Ltd | Financial services | 2025 |
| Challenge the Future Ltd | Professional & scientific | 2024 |
| Challenge Your Mindset Ltd | Wholesale & retail | 2013 |
| Challinger Limited | Professional & scientific | 2015 |
| Challtraders Ecommerce Ltd | Wholesale & retail | 2024 |
| Chama News Ltd | Wholesale & retail | 2017 |
| Champion Leisure Lincoln Ltd | Arts & recreation | 2007 |
| Chan & Pang Ltd | Hospitality | 2012 |
| Chancel Investments Limited | Real estate | 2022 |
| Chandiwana Investment Group Limited | Real estate | 2025 |
| Channe Ltd | Hospitality | 2026 |
| Chao Phraya Muay Thai Ltd | Arts & recreation | 2012 |
| Chaos Discount Limited | Wholesale & retail | 2003 |
| Chapelgarth Consulting Limited | Professional & scientific | 2002 |
| Chapman Glass Limited | Extraterritorial | 2022 |
| Chapter Travel & Aviation Ltd | Administrative & support | 2013 |
| Chapterhouse Theatre Company Limited | Arts & recreation | 2017 |
| Char-Marsh Limited | Construction | 2025 |
| Charanjit Singh Uppal Ltd | Wholesale & retail | 2023 |
| Charbenros Limited | Professional & scientific | 2002 |
| Chargevine Ltd | Wholesale & retail | 2023 |
| Charis Signature Events Ltd | Administrative & support | 2025 |
| Charis Training Limited | Information & communication | 2016 |
| Charlcott Holdings Limited | Financial services | 2024 |
| Charles Charlesworth Limited | Administrative & support | 2023 |
| Charles Conde Consulting Ltd | Professional & scientific | 2024 |
| Charles Edward Developments Ltd | Real estate | 2024 |
| Charles Quartic Capital Ltd | Financial services | 2023 |
| Charles Smith Holdings Ltd | Wholesale & retail | 2024 |
| Charlie Juliet Ltd | Information & communication | 2019 |