"The water levels are higher than our sewage network at the moment, " she said.

BBC: Thames river levels cause sewage pipe overflow

However, despite removing warning signs, it added that beach users should exercise caution until the sewage network was back to normal.

BBC: Torbay sewage pumping 'not affecting beach water quality'

Heavy rain can overwhelm the drains, forcing Thames Water, the firm that runs the network, to discharge a mix of rainwater and sewage directly into the Thames.

ECONOMIST: The capital's overflowing drains are due for a big upgrade