CSM Security Locksmiths are based in Columbia Place, Campbell Park, Milton Keynes, Buckinghamshire. As a business, we aim to provide an extensive range of locksmith services and top of the range home security systems. Our locksmiths and security system engineers also operate throughout Hertfordshire, Bedfordshire & Buckinghamshire. In order to maintain high levels of customer service, our 24-hour emergency call-out service has a 30 mile geographical limit. This is based on the location of our Head Office. This ensures we provide a fast and effective response for customers that require our emergency call-out service within the local area.