tea?, the queen?, prince charles?, tower of london?... what is the most english thing or person
well the queen and prince charles are British so they count scotland and wales and northern ireland, tea is from china and other countries, so by the process of elimination from your list the tower of london is the most English. but surely other things such as Big Ben, the London Eye, The Dome and the thames are thethings people think of with england! although to tourists all they think about is the royal family!!
The English don't know how to have tea, tea isn't very English to be honest. You need more options.
Tea - The way we make and drink it is uniquely English - regardless of its origin.
Red - the Great British colour, such as our telephone boxes and post boxes.
Jerusalem - not the City, that couldn't be farther from English, I mean the hymn/song of course.
The Monarchy - not just the Queen, but the whole institution, though not the oldest, we made it our way.
British Army - maintains the traditional class system, but fairer, with officer's and squaddies, can be very ceremonial and "English".
Queing - yes.
British humour - (Unfortunately British Humour is now dry, but we are renowed for our 'humour' style of the 50's, 60's and 70's - see Carry On and Monty Python).
Westminster Clock - yep.
Education system - it is still believed we have the best education system, and the worlds most comprehensive one - not actually true.
Politics - We DO have the best form of government, lots of ceremony to make it meaninful, and seriority. Unfortunately too much liberalism.
Britain today however, is the pioneer for a multicultural world - everything starts in Britain, and world multirace and culture will start in Britain - good or bad.
Moaning about the weather
impeccable manners. agas and green wellies and having a labrador and a jack russell. saying things like 'righto!' and 'by jove!' and 'jolly good show'.
composers such as Vaughan Williams ('The Lark Ascending', anyone?), Tallis, Byrd, Purcell, Britten, Elgar...
Cox's Orange Pippin