Simon Heffer is the supreme Stakhanovite among British writers. Where the original Stakhanov moved 227 tonnes of coal in a single shift, within the past decade Heffer has produced four massive volumes of modern British history, each little less than 1,000 pages. Alongside them he has edited three equally voluminous diaries of the waspish socialite MP ‘Chips’ Channon, as well as writing regular reviews and columns.