Former police officers who have made claims against Damian Greencould be prosecuted, the Metropolitan Police Commissioner has warned.

Cressida Dick condemned the behaviour of former Scotland Yard officers after they spoke out about porn allegedly found on the the then Deputy Prime Minister's computer during a raid on a separate matter in 2008.

Her comments come after Neil Lewis, the detective who examined computers seized from his office in a controversial raid nine years ago, said that evidence he found left him in “no doubt whatsoever” that it was Mr Green who had accessed the pornographic material.

The retired officer said he had decided to speak out in support of his former boss Bob Quick, after Mr Green ridiculed similar claims made by Mr Quick, a former Met assistant commissioner.

Speaking to LBC radio, Ms Dick said: "Police officers have a duty of confidentiality. We come into contact with personal information very regularly, sometimes extremely sensitive.