But it was not just a clash of eras or generations, it was a clash of cultures too. The sixties was an American decade: the Americans might have gone home after the war but they were back in these years, influencing the form of music, books, art, fashion, social attitudes. British pop groups sang with American accents, teenagers dressed in denim, Marvel comics filled the racks in station newsagents, and American shows and the American war in Vietnam filled the staid black-and-white screens in homes which had television.

