Which members of staff should we issue keys to, and what kind of locks should we use to optimise security?

Dr Steffan George, development director at the Master Locksmiths Association, says that either trusting or distrusting all staff is no solution to the problem of who has access to where in stores.

He advises: “Develop a number of security levels based on responsibility and experience. For example, managers and senior team members might hold a key that will allow them into the offices and valuable stock storage areas, while weekend staff might only be able to enter the staff room with their key.

“In addition, consider who needs access to safes, locked cabinets and high-value stock. Only a select few are likely to open up the store and will need a key and alarm codes.”

He adds that different types of locks and keys can help with this: “Ideally a master key system would be used throughout a building, so access to different areas is controlled. Patented keys and restricted keys are also advisable - patented keys carry legal protection preventing copies being made without providing proof of ownership, while restricted keys are unlikely to be copied due to their unusual design and unique mechanical features.

“When keys are retained by an employee or go missing, the existing key would be deleted from the database, the lock reconfigured and new keys issued.”

For areas where all staff will need access, electronic or mechanical access control systems could be more appropriate.

Visit www.locksmiths.co.uk for more information.