Kingston’s giant fatberg is threatening to make a comeback after a fresh seam of grease began clogging up sewers below London Road.

Three tonnes of new fat has been pumped out already.

Thames Water texted residents today to say: “London Road sewer is worse than first thought due to more fat entering it.

"We’re still investigating so no end date yet. Thanks for your patience.”

Gordon Hailwood, Thames Water contracts supervisor, said: “This sewer pipe collects the sewage from across most of Kingston so it could be coming from anywhere.

“Old, congealed fat is white, but this was yellow in colour, so it’s been put into the sewers over the last few weeks.

“We’ve spent a lot of time drawing attention to the dangers of putting fat down the drain, so I can’t imagine where these huge amounts are coming from."

Pipes between Cambridge Road and Asda supermarket have been damaged, he said.

Mr Hailwood said: “The weight of the fat in the pipes has pushed the sewer pipe down into the soft subsoil.

"We’ll need to replace these brick sewers with newer more robust pipes."

Last month the 15-tonne fatberg caused a sewer pipe to collapse underground in London Road.  

The fatberg made up of clumps of wetwipes and lumps of cooking fat able to fit into a double decker bus was initially sucked out of a pipe and roadworks began to fix the situation down below.

Thames Water will be writing to homes and businesses in Kingston to underline the seriousness of the problem.