Today, London’s great clock above the Palace of Westminster will fall silent for up to four years as its chimes are stopped for major restoration work. Its famous ‘bongs’ will not be heard again, except on special occasions, until 2021. For a nation of fastidious timekeepers whose evening news reports on BBC radio and TV traditionally begin with the great clock striking the hour live, this is quite disconcerting news. Some worry who will maintain this national symbol in the future. Will the skills and knowledge of clock maintenance be lost in our digital world?