According to venerated bard George Orwell, eleven factors determine the perfect cup of tea. My favourite is this one, not least because my family has been doing it the other way round forever:
Tenthly, one should pour tea into the cup first. This is one of the most controversial points of all; indeed in every family in Britain there are probably two schools of thought on the subject. The milk-first school can bring forward some fairly strong arguments, but I maintain that my own argument is unanswerable. This is that, by putting the tea in first and stirring as one pours, one can exactly regulate the amount of milk whereas one is liable to put in too much milk if one does it the other way round.
I’ve recently started to drink more tea, so this list comes in handy. Here’s the whole thing for you, including an actual reading of the list.