I do hate to see a Union flag shown unintentionally upside-down, but as far as I can make out if it's not attached to a flagpole then either way round is potentialy correct. (If no flagpole then we don't know if we're looking at the "front" or the "back" of the flag, so it could be correct. Though I _think_ convention is that it's shown as if the flagpole was on the left.
It's amazing how often it is displayed the wrong way up, and how few people realise.
Mick Jagger (Sorry, now SIR Michael Philip Jagger) wrote in 1965 in "Get off my cloud": "Then in flies a guy who's all dressed up like a Union Jack..." I trust that you (as a fellow Englishman, albeit a bit detribalised) will write to Sir Mick and advise him of the error of his ways?
While you're about it, perhaps you could also point out to him that "Get off of my cloud" (the chorus of the song) is not the kind of English that he was knighted for. And that was from 1965 when he would have been not too long out of school and should have known better....