Using Section 44 Terrorist legislation to randomly search innocent civilians is not very nice. Some might say it's a complete fucking waste of everyone's time and resources, others might say it's a great way for the Police to remind ordinary worker drones that they must behave and conform.
Carry one of these in your pocket and when PC Thudbutt of the Yard tells you he wants to look in your pockets to see if you are carrying a suicide bomber, show it to him. Remember, he works for you. You pay his wages, his training and his pension. He should call YOU Sir, never the other way round.