Looking for potentiometers, I was pointed to Antique Electronic Supply in the USA. Their website is:
https://www.tubesandmore.com. It is very comprehensive and clearly laid out. I wonder if others have used them from the UK?
Going through this thread, I notice that couple of of recommended suppliers no longer have active websites, suggesting that they have closed. Mods, is it worth deleting the earlier Bardwells entry?