Forget Westminster bust-ups and PMQs, some of the key events that have shaped modern British politics happened not in the cloisters of parliament or Downing Street’s many corridors of power, but in car parks, village halls and seaside resorts where the mundane have played host to the mighty. From Pitt the Younger’s Putney Heath duel to finding Margaret Thatcher a voice coach on a train, Harold Wilson’s ‘Scilly’ season holidays to John Major’s dental appointment clearing his path to No10 – these (and many more) are the places where chance meetings, untimely deaths and snap, sometimes daft, decisions changed the course of politics.

Matt Chorley has spent almost two decades covering Westminster, interviewing prime ministers, mocking ministers and chronicling the serious, and sometimes unintentionally absurd, events which act as unlikely turning points in the direction of a nation. Illustrated by award-winning political cartoonist Morten Morland, Planes, Trains and Toilet Door