Two performances, though, achieved the cruel grotesquerie that The Mikado requires. Simon Butteriss's Ko-Ko was a triumph of cartoonish exaggeration, all double-takes and overblown campery. His specially concocted "little list" had plenty of targets who'll surely not be missed, including anti-gay archbishops and a princess whose dog mauls her mum's corgi. Meanwhile, Gillian Knight's Katisha was a chill blast of real opera, like one of Janacek's ageing harridans in overdrive. She also made the most of the words, surely essential in any G&S performance but only intermittently the case here.