Leading MPs will be calling on the Governement today to make changes to policies regarding youth gang culture.
The conference, Tackling Gang Culture, will look at whether Government strategy to remove gang leaders following the 2011 riots was counter-productive. It's thought it may have created a power vacuum in which younger gang members grabbed power on a wave of violence.
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The creature was spotted in Hampstead Heath, the London Underground and the South Bank.
The problems appear to have been caused by a power supply problem in Queen's Park in north west London, which has affected signalling.
Cloudy conditions continuing overnight, with some patchy outbreaks of rain.