The FAA still requires ashtrays in bathrooms interestingly. To avoid those who do smoke there using the trash and causing a fire:
Regardless of whether smoking is allowed in any other part of the airplane, lavatories must have self-contained, removable ashtrays located conspicuously on or near the entry side of each lavatory door, except that one ashtray may serve more than one lavatory door if the ashtray can be seen readily from the cabin side of each lavatory served
What are the black dots around the map when you zoom in? For instance South-East Wales / Bristol, I see a few black dots that look like they cover shaded areas or something. They also show up at the sites for wind farms, possibly they're the turbines themselves?
I happened to be looking at ski boot fitting this morning and came across a web app from fischersports that allows you to measure your feet using your phones camera. Surprise surprise it uses a sheet of A4 paper.
They were supposedly invented in Scotland, and I've not seen them sold in an English fish and chip shop. Go to Scotland however and they're not uncommon.
https://www.law.cornell.edu/cfr/text/14/25.853