A fatberg weighing the same as 10 double decker buses that stretches the length of two football pitches is blocking a section of London’s ageing sewage network.

Thames Water must break up congealed mass of fat, wet wipes and nappies to prevent raw sewage flooding streets.

The congealed mass of fat, wet wipes and nappies is one of the biggest ever found and would have risked raw sewage flooding on to the streets in Whitechapel, if it hadn’t been discovered during a routine inspection earlier this month.

Now workmen armed with shovels and high-powered jets are working day and night to break it up. It’s expected that this very grubyThe grim task will take three weeks.

The fatberg is estimated to weigh 130 tonnes and stretches for 250 metres making it 10 times larger than the one found in London in 2013.

The crew trying to break it up are equipped with special protective suits and at times will have to hack away at the fatberg with shovels. The waste will then be sucked up into tankers and taken for disposal at a recycling plant in Stratford.

CCTV camera inspections showed the 1,200mm high by 700mm wide sewer to be totally blocked by the fatberg, which is 3.5 metres deep.