From nobs to navvies, tea is a therapeutic necessity for British palates. How you take your humble cuppa says much about you. Me? White no sugar please, and don’t just show the bag to the water. Give it a proper dunk-and-squeeze in the mug, which should be neither a large thimble nor a small tureen though either is preferable to a prissy cup and saucer. Milk slopped in after but not the whole udder thanks. Oh, and baristas who seem to think tea can brew in milk-cooled water, for the umpteenth ti