By Claire West

The figures, obtained by the Liberal Democrat London Assembly environment spokesperson, also reveal that in just the first eight months of the year almost 40 million cubic metres of sewage flowed into the river.

Last month saw more than 6.5 million cubic metres of sewage flow into the Thames, new figures obtained by Mike Tuffrey AM have revealed.

Speaking just days before Thames Water publish their proposals for the Tideway Tunnel or "super sewer" Mike Tuffrey said:

"It is simply a disgrace that just last month the volume of sewage flowing into the Thames would have filled 1741 Olympic size swimming pools."

"These figures are a powerful demonstration of why action must now be taken to end the disgraceful situation of the Thames being treated as an open sewer."