The rise and rise and rise and epic fall of Cambridge professor Jason Arday could only happen in idiotic, idealistic, soppy, patronising, doomed Great Britain. He just steamed on and on in a blaze of unchallenged triumph and glittering prizes, collecting accolades and media appearances. He also collected prestigious visiting fellowships and professorships at other universities, both here and in America, some of them even real. Arday is still insisting upon his innocence, issuing a simpering statement worthy of a pin-up being ousted from a boyband. There is a lot Martha could teach Meghan, whose jam sales are stalling and whose brand is hardly booming.