Thames Water has launched what it expects to be a lengthy operation to remove a mass of concrete discovered to be plugging three Victorian sewers.

Caused by people pouring concrete down their drains, this blockage is expected to be far more difficult to remove than the fatbergs, collections of fat, oil, and wet-wipes, more commonly seen.

According to the Company, “an investigation into how the concrete got into the sewer and to recover costs is underway”.

The Evening Standard has a video of the concrete here.