Tom English’s book The Grudge, first published in 2010, tells the story of the Calcutta Cup match between Scotland and England in March 1990. Memorably, Scotland beat their old rivals at Murrayfield to win the Grand Slam. But this was more than a match. And more than a rare Scottish sporting triumph. It was one of the most memorable rugby matches in modern history, set against a wave of anti-English sentiment fuelled by Margaret Thatcher’s imposition of the Poll Tax on Scotland.