Riley_UK

The reason that the UK uses 25ml is that it's a conversion from the old spirit measurement of 1/6th of a gill, which is actually 1/24th of a pint and so on... Don't know when the change occurred, and I've never seen anything with a 1/6th gill marking on it, but one of the older guys I worked with when I first started 'tending had used them, so can't be that long ago. I'd hazard a guess at early 70's, as that's also when the shilling went out of fashion....

Oh my word..... Leave the lid on.