I travel monthly through MAN airport, always find the security operators constantly grabbing search trays off passengers whilst placing contents in before they have finished, resulting in passengers using sometimes four or five trays with belongings in. As the poster above has just mentioned, other airports in UK and Europe you can manage to fill several trays and go through search areas without any need for this with numerous trays. All this results in extra queues at MAN airport security amongst other problems, I also notice the constant shouting by security personnel walking around the search area at queues of passengers explaining the liquid regulations, this is unprofessional and not done at other airports.