Journalist Caroline Criado-Perez has told ITV London that although she welcomes Twitter's new move to report abusive messages, there was more that needed to be done.
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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%.