It comes after a number of failings. Detectives at a unit in Southwark were found to have pressured victims to drop charges to boost performance figures.
Today the current head of the central Sapphire command Detective Chief Superintendent Mick Duthie said officer numbers dealing with sexual exploitation including grooming gangs would be boosted.
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Four men have been arrested after a 21-year-old man was murdered in Lewisham
London is the second least affordable city in the UK, while commuter hotspot St Albans has seen the biggest prices rises
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.