From Jerry del Missier’s imminent parliamentary grilling to questions for IG Group William de Tracy, Reginald Fitzurse, Hugh de Morville and Richard le Breton were the knights who misconstrued a royal exclamation and did for Thomas Becket, so it sounds vaguely fitting that somebody called Jerry del Missier should be party to a Henry II defence. You’ll recall that del Missier was the Barclays co-head of investment banking who wrongly interpreted an ambiguous message from Bob Diamond as a direct instruction to rig the Libor market.