| Cotswold Staircases & Joinery Ltd | Construction | 2024 |
| Cotswold Star Management Ltd | Real estate | 2020 |
| Cotswold Stone Homes Ltd | Construction | 2019 |
| Cotswold Survey Solutions Limited | Professional & scientific | 2007 |
| Cotswold Therapy Ltd | Health & social care | 2024 |
| Cotswold Tiger Laundry Limited | Administrative & support | 2019 |
| Cotswold Tiger Limited | Real estate | 2018 |
| Cotswold Tiles LLP | | 2010 |
| Cotswold Trampolining Ltd | Arts & recreation | 2026 |
| Cotswold Transport Ltd | Transport & logistics | 2019 |
| Cotswold Turfcare Limited | Administrative & support | 2008 |
| Cotswold TV Limited | Information & communication | 2019 |
| Cotswold Vans Limited | Wholesale & retail | 2023 |
| Cotswold Venues Limited | Hospitality | 2026 |
| Cotswold Vets Limited | Professional & scientific | 2013 |
| Cotswold Water Park Events Ltd | Education | 2017 |
| Cotswold Water Park Hire Ltd | Hospitality | 2013 |
| Cotswold Way Properties Ltd | Real estate | 2026 |
| Cotswolds and Partners Limited | Administrative & support | 2017 |
| Cotswolds Canines Limited | Wholesale & retail | 2025 |
| Cotswolds Electrical Solutions Ltd | Construction | 2026 |
| Cotswolds Fine Wine Limited | Extraterritorial | 2004 |
| Cotswolds Holiday Lettings Limited | Hospitality | 2021 |
| Cotswolds Toys and Collectables Limited | Wholesale & retail | 2025 |
| Cottage Grove Properties Ltd | Hospitality | 2022 |
| Cotteswold House Limited | Real estate | 2006 |
| Country Culture UK Ltd | Professional & scientific | 2025 |
| Countryside Management Limited | Administrative & support | 1986 |
| Couture Design Ltd | Professional & scientific | 2019 |
| Covent Garden Chorus Ltd | Education | 2020 |
| Cowley & SON Limited | Other services | 1995 |
| Coxwell Court Management Company Limited | Other services | 1982 |
| CP Jefferies Limited | Construction | 2011 |
| CPK Commercial Services Limited | Professional & scientific | 2024 |
| CPS (Swindon) Limited | Construction | 2015 |
| Crane Farm Services Limited | Energy | 2015 |
| Cranfield Employment Law Ltd | Professional & scientific | 2022 |
| Creation Contracting Limited | Extraterritorial | 2009 |
| Creative Installations (UK) Limited | Construction | 2014 |
| Creative Picture Framing Gloucestershire Limited | Manufacturing | 2010 |
| Crees Enterprises LLP | | 2020 |
| Crfc Trading Ltd | Arts & recreation | 2023 |
| Criou Leisure Limited | Hospitality | 2021 |
| Cripps Barn Group Limited | Hospitality | 2008 |
| Cripps Grangefields Ltd | Hospitality | 2020 |
| Cripps Hazel GAP Ltd | Hospitality | 2016 |
| Cripps Healey Limited | Hospitality | 2014 |
| Cripps IVY Lodge Ltd | Hospitality | 2023 |
| Cripps New Inn Limited | Hospitality | 2013 |
| Cripps Old Gore Ltd | Hospitality | 2020 |
| Cripps PUB Co Ltd | Hospitality | 2019 |
| Cripps Stone Barn Limited | Hospitality | 2009 |
| Crmworks Limited | Extraterritorial | 2017 |
| Crockett & DAW Ltd | Other services | 2021 |
| Crombec Limited | Professional & scientific | 2019 |
| Crossfit Cirencester Limited | Arts & recreation | 2017 |
| Crossways BHG Ltd | Financial services | 2024 |
| Crown Construction Solutions Ltd | Construction | 2014 |
| Crown Timber Limited | Extraterritorial | 1976 |
| Crucis Developments Limited | Construction | 2017 |
| Crucis Park Estate Limited Liability Partnership | | 2017 |
| Crystal Opus Limited | Wholesale & retail | 2021 |
| CSO Financial Limited | Financial services | 2021 |
| CTC (Properties) Limited | Administrative & support | 2016 |
| Cthru Design Limited | Wholesale & retail | 2009 |
| CTL Motor Company Ltd | Wholesale & retail | 2025 |
| CTS Sports Limited | Manufacturing | 2017 |
| Cubic Coaching Ltd | Professional & scientific | 2019 |
| Cueline Ltd | Information & communication | 2026 |
| Cullinsa Ltd | Information & communication | 1989 |
| Curve Strategic Ltd | Professional & scientific | 2022 |
| CWD Projects Limited | Construction | 2020 |
| Cyclone Crane Services Limited | Manufacturing | 1989 |
| Cystrat Ltd. | Financial services | 2001 |
| D & B Developments Dorset Limited | Administrative & support | 2013 |
| D & J Windows Limited | Construction | 2012 |
| D & S Control Systems Ltd | Administrative & support | 2023 |
| D and E Pubs Ltd | Hospitality | 2022 |
| D L Hayward Electrical Limited | Construction | 2004 |
| D W Dunn Limited | Construction | 2000 |
| D W Vincent Holdings Ltd | Financial services | 2024 |
| D W Vincent Property Ltd | Real estate | 2026 |
| Dailley Living Ltd | Real estate | 2016 |
| DAN Cuff Motor Engineering Limited | Wholesale & retail | 2010 |
| DAN LEE Boatbuilding Ltd | Manufacturing | 2025 |
| DAN North Limited | Construction | 2013 |
| Danape Ltd | Hospitality | 2025 |
| Danem Services Ltd | Professional & scientific | 2007 |
| Daneway Inn Limited | Hospitality | 2023 |
| Daniel Baird Soil Consultancy Ltd | Professional & scientific | 2015 |
| Danlo Homes Ltd | Real estate | 2021 |
| Dannicus Developments Ltd | Construction | 2022 |
| Danny&Co. Limited | Professional & scientific | 2019 |
| Darrell Warner Ltd | Arts & recreation | 2003 |
| Davalsie Ltd | Professional & scientific | 2025 |
| Davenport Performance Ltd | Professional & scientific | 2016 |
| David W Vincent Ltd | Agriculture & fishing | 2014 |
| David Wright Psychology Services Ltd | Education | 2023 |
| Davis Quality Food Company Limited | Hospitality | 2016 |
| Dazzling Brilliance Limited | Health & social care | 2010 |