But The Telegraph investigation can disclose:
* Darren had been previously sentenced to two years in jail for making hoax bomb calls, nuisance and threatening calls about neighbours and criminal damage
* he falsely confessed to the murder of a prostitute in the midst of a high profile police manhunt in the 1990s
* a judge accused him of telling “some pretty whopping lies” at the conclusion of a court case 15 years ago
A senior source at Scotland Yard, which has been involved in the investigation into Darren’s claims, said: “We are between a rock and a hard place. We don’t want people to ever lose faith in coming to the police. We believe our victims and we support vulnerable victims who need our support.
“But this has been months of difficulties. We cannot prove categorically that he is lying but there is no evidence for his claims.”
The source added: “Darren needs proper help. That is absolutely fundamental.”
Police are furious that Darren’s claims were given publicity by the Exaro website before they could be investigated fully by officers. They believe that the glare of publicity has put Darren under more pressure.
“This is not Darren’s fault. This is a problem for the people at Exaro,” said the source.
Police were surprised that an Exaro journalist had accompanied Darren to a number of interviews with detectives.