Chubb Locks Custodial Services (CLCS) is the UK and global leader in custodial locking solutions. Working in partnership with government and secure establishments, CLCS has developed world class products designed to respond to the challenges of modern custodial environments. Whether it be a mechanical pass lock, a cell lock , an electro-mechanical, computer monitored system or a specialised, bespoke locking mechanism, CLCS have the solution.