If the product you're looking at is Sold Secure approved, you can rest confident that it provides a high level of security.
Diamond Approval is Extra-high security grade used only for specific products such as: Lock cylinders, security chains, ground anchors and portable wheel locks for the caravan market.
Gold Approval is the top level of resistance against the dedicated thief which should be used in a high-risk environment.
Silver Approval is a greater level of resistance against the more determined thief. This should be used in a higher risk environment.
Bronze Approval offers a good level of resistance against the opportunist thief and should be used in a normal risk environment.