Everyone who knew Margaret Thatcher felt at one time or other the bruising force of her handbag. My turn came during her big fight with Nigel Lawson about the chancellor’s effort to tie the value of sterling to the Deutschemark. Surely, I had needled her, she would bend eventually to Treasury pressure to take the pound into the European exchange rate mechanism?

The year was 1989 and the occasion a drinks party hosted by political journalists at Westminster. In response to my act of lèse-majesté, Thatcher took hold (quite literally) of the lapels of my jacket: “Mr Stephens! You don’t understand! I won’t have the Belgians decide the value of the pound!” If I wanted to write about the government’s economic policy, she continued, I should pay less heed to what I was being told by the Treasury.

The conversation was off the record, but, even stripped of identifying marks, it made for a good story. Aside from the curious notion that her own chancellor could not be trusted with the economy, her manner conveyed the visceral quality of her hardening antipathy towards Europe. This hostility was first to undo her and then, over time, to become a poisonous bequest to the Tory party. It might yet see Britain depart the EU.