The inquest is hearing from the Detective Inspector from the Standards Department at the Met Police who says there is no evidence to back any of the claims.
The Professional Standards Detective tells the inquest jury that when the anonymous letter was sent for forensic examination, DNA was found on envelope. Billion to one chance DNA belonged to the unnamed defendant, jury is told.
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This weekend you can do take a look inside some of London's most iconic buildings.
The family of a father-of-three from East Ham have made a fresh appeal to catch his killer 20 years after he was murdered.
The Metropolitan Police has paid £45,000 in damages in an out-of-court settlement following the 'unlawful arrest' of a black motorist.