Lord Janner
Lord Janner will not face court proceedings (Reuters)

One of Lord Janner's alleged victims has come forward to claim the peer sexually abused him in a bush during a game of hide-and-seek.

Father-of-three Hamish Baillie, 47, went public with his claim after it was announced Janner will not face prosecution by Crown Prosecution Service for a string of alleged paedophile crimes.

Baillie said the abuse took place in the early 1980s when he was 15, and that Janner groomed him after the pair were introduced by the director of a children's home – himself a disgraced child sex abuser.

"I was just moving behind a gorse bush to hide when I saw Greville Janner walking towards me,' said Baillie.

"He sat down beside me. Then he abused me. It was indecent touching but he wanted it to go further. It lasted no more than 30 minutes, but it felt like an eternity."

The alleged episode in Bradgate Park, Leicestershire, caused psychological problems by leaving him incapable of trusting adults, Baillie said.

Janner escaped prosecution on three occasions when the former Labour MP should have faced charges, CPS director Alison Saunders has admitted.

But there will be no proceedings against the peer now due to his ailing health from Alzheimer's, which has rendered him unable to represent himself in court.

'He has blighted my life," said Baillie of Janner. "How can they [the CPS] publicise the fact that there was enough evidence to charge, yet then say it is not in the public interest to pursue it?

"As far as I'm concerned, her [Saunders] actions are barely any less perverse than the abuse inflicted upon me as a teenager. She should initiate an inquiry into her own conduct and then step down because Alison Saunders certainly hasn't been doing her job properly."

Saunders has come under pressure following the decision not to prosecute Janner, which has reignited claims of a "cover-up" to protect influential sex abusers.