Our growing collection of Big Ben films gets another addition with this video explaining how Big Ben keeps the right time.

This video was filmed by the Web Centre team, up in Big Ben’s Clock Mechanism room and the belfry. My favourite moment is when the mechanic, Ian, makes the casual aside about the log sheet used to record any corrections made to the pendulum: “We enter it into a log, which has been going for about the last 100 years…”

We are working on more Big Ben videos that will come out over the year, to tie-in with its 150th anniversary, and they’ll be added to the YouTube group as they go live.