A longer guided tour that visits the six Nicholas Hawksmoor's churches that regulated time as set each day at 13:00 Greenwich Mean Time by the dropping of the Red Ball and so regulating the same time of day through the City of London and finishing in Holborn.
After Greenwich Village, it'a a short ferry trip across the river.
Past the maker of the Big Ben bell in the clock tower of the UK Parliament.
Finish up in the crypt cafe for refreshment to end the walk.
