It won't last.
I've been in the loft again and done a bit more excavating. I retrieved the china that I'd misplaced, and was shocked by just how many plates I have in that design. I might sell some on Ebay. But I probably won't.
I've brought down some other stuff - some lovely stainless steel frying pans, some saucepans, more Ikea stuff (some still in packaging). It's all packed into boxes to go to a local charity.
I also brought down the matt white emulsion - not sure it's still liquid, I'll find out tomorrow, plus my painstick, the paintstick spares, some special clingfilm type stuff for protecting skirtings, and some brushes.
I will be neutralising the walls over the weekend.