If you bleep just ask security to use the wand. Usually a pat down reveals nothing towards the cause of the bleep. The wand should detect the offending object.
The pat down should only be used if the reason for the bleep cannot be identified or the random search requirements for objects that won't cause a bleep.
At last I will be able to take my knitting needle and nail clippers through UK security as the rules are to be relaxed shortly. Also back to proper cutlery.
