If you listen carefully just above this unassuming grate you can hear the ripple and splash of flowing water. This is the sound of the River Fleet, London’s largest subterranean river. Forced underground by the city’s burgeoning populace the river still flows from its source to its mouth where it joins London’s main waterway, the Thames. Yet what lies beneath?
Below the ground there is a remarkable network of tunnels and chambers, put in to place by Victorian engineers, the final step in a process which took centuries. For over a thousand years there had been a shipping dock at the mouth of the river – its name comes from the Anglo-Saxon fleot which means a tidal inlet. Yet it was not destined to persevere as a river in its own right.
