Mr A Tis is right. I flew out of Liverpool last Friday night (A very busy time at Liverpool) and the queue was backed up into the landside buffet area yet the queue was moving and it only took 8 minutes to get through security. All x-ray machines and Security frames were operational and it was well staffed.
Incidentally, Liverpool Airport is to expand the security search area and add a fifth X-ray machine (complete with staff!!!!) in November.