Dramatic scenes in Brentford then when someone left the plug out of the canal, and most of the water disappeared, leaving the boats on the mud..

Actually what happened was the ( probably ancient ) chain snapped on the sluice gate at the lock and the water drained out into the Thames.

They’ve replaced the chain and the canal is slowly refilling…

I don’t suppose most people walking along the towpath even noticed, such human perception these days..