CountyClean, in charge of the repair operation where the world's largest 'fatberg' was found, has taken a survey of the damage with a remote CCTV camera.
This footage is thought to show the beginning of the fatberg under the streets of London.
More top news
Two police officers helping to guard diplomats have been sacked for sharing pornographic images on their mobile phones.
A 32-year old man from Hampton has been jailed for five years historic sexual assaults in the late 1990s.
A teenager who was mistakenly released from prison after he was arrested on suspicion of attempted murder has been detained by police.