| Cartwright Construction (Cardiff) Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Cartwrights Waste Disposal Services Ltd | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Carty Building Contractors Ltd | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Carty Building Contractors Ltd. | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Carver Engineering Services Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Carver Engineering Services Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Carver Engineering Services Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Carwash (Rumney) Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| CAS Commercials | | | workplace safety or health violation | 2020 | UK-HSENI | £0 |
| Casa dei Bambini Day Nursery | | | childcare and educational services violation | 2021 | UK-OFSTED | £0 |
| Casa Mia Interior Design Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Casa Mia Interior Design Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Casa Mia Interior Design Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Casa Mia Interior Design Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Casa Mia Interior Design Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Casa Mia Interior Design Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Casa Mia Interior Design Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| CASC | | | workplace safety or health violation | 2023 | UK-HSENI | £0 |
| Casemaker (Heathrow) Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Cases Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Cases Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Casey Build And Design Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Casey Build And Design Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Casey Construction Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Casey Construction Yeovil Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Casey Consultants Ltd | | | workplace safety or health violation | 2023 | UK-HSENI | £0 |
| Casey Consultants Ltd | | | workplace safety or health violation | 2023 | UK-HSENI | £0 |
| Casey Consultants Ltd | | | workplace safety or health violation | 2023 | UK-HSENI | £0 |
| Casper Douglas Properties (Lake) Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Caspian Building Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Caspian Group Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Caspian Group Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Caspian Group Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Caspian Group Limited fka Caspian Access and Plant Hire Limited | | | workplace safety or health violation | 2022 | UK-HSE | £83,012 |
| CASS Supplies Limited | | | workplace safety or health violation | 2015 | UK-HSE | £116,104 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Cassa Building & Design Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| CASSEL & FLETCHER DEVELOPMENTS (STALYBRIDGE) LIMIT | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Cassel & Fletcher Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Cassel & Fletcher Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Castacrete Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castacrete Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castacrete Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castacrete Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castings Technology International Limited | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castle & Hall Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Castle and Nest Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Castle and Nest Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Castle Construction (Cheltenham) Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Construction (Cheltenham) Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Contracting Ltd | | | workplace safety or health violation | 2019 | UK-HSENI | £0 |
| Castle Diamond Technology Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Castle Enterprises (Midlands) Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Castle Enterprises (Midlands) Ltd | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Castle Enterprises (Midlands) Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Enterprises (Midlands) Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Enterprises (Midlands) Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Castle Fine Arts Foundry Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Castle Hall Academy | | | childcare and educational services violation | 2017 | UK-OFSTED | £0 |
| Castle Hill Village Nursery | | | childcare and educational services violation | 2022 | UK-OFSTED | £0 |
| Castle Homes Care Limited Shropshire Children's home | Waterland Private Equity | private equity (including portfolio companies) | childcare and educational services violation | 2022 | UK-OFSTED | £0 |
| Castle Homes Limited | Waterland Private Equity | private equity (including portfolio companies) | workplace safety or health violation | 2013 | UK-HSE | £100,000 |
| Castle Homes Of Warwick | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Castle Masonry Products Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Castle Masonry Products Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Castle Residential Properties Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Castle Residential Properties Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Castle Scaffolding (Wales) Ltd | | | workplace safety or health violation | 2014 | UK-HSE | £13,100 |
| Castle Security Group (Northern) Limited | | | security industry violation | 2014 | UK-SIA | £2,000 |
| Castle Sheet Metal Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Castle Special Projects LLP | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Castle Special Projects LLP | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Castle Stars Educational Day Nursery | | | childcare and educational services violation | 2018 | UK-OFSTED | £0 |
| Castle Technologies (Stranraer) Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Castle Upholstery Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Castle View Primary Academy | | | childcare and educational services violation | 2020 | UK-OFSTED | £0 |
| Castle Waste Services Limited t/a Castle Environme | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
