Moose’s Mum says only 1, 2 and 5 are actually valid, and she should know! It’s funny if you watch a lot of British shows.
Moose also posted:
“3 and 4 have fallen out of use. However the rest of it passes muster. To prewarm the pot or not to pre-warm the pot, that is the question. Bags or loose leaf: another minefield. Milk in first or last...,000eeek. One lump or two, or even Julie Andrews. Britishness is hard, it requires regular practice.”
So now we know, T-c!