Last one: 13 ac Flexible plastic packaging material. I have P?L?T?S?E...... but I've never wrapped anything in "politesse" - apart from my irresistible charm, of course ;-)
Thank you. I am an idiot. Couldn't see what was in front of my eyes and had made the obvious mistake in 10 d! A small package of politesse, wrapped in polythene naturally, is on its way ;-)