Watch video of the house bought by a Chiswick resident, which is slipping onto the Torquay coast.
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The footage was apparently shot in south London showing a motorist eating a bowl of cereal, and texting whilst sitting in traffic.
The Prime Minister is trying to curb the money laundering that goes on at the highest ends of the London property market.
The average increase across the capital is 9.2% this year - with areas in the east and south of the city up by 15-16%.