While travelling through Stansted airport on the 25th of December free plastic zip-lock bags were not available and a note on the desk of Security person checking boarding passes informed personnel that Boots was no longer selling plastic bags and to please stop referring passengers to Boots.
I had no problems with my liquids in a bag like this:
http://www.muji.eu/pages/online.asp?...ub=79&PID=3402
but the bag was barely half full.
And on return to Stansted, the immigration officer had his feet on his desk. Welcome to Monkey Island!