Back in 1999, the BBC reported on the discovery that Konrad Kalejs, an alleged Nazi war criminal, was living in a nursing home in Leicestershire:

“Former Labour MP Lord Janner, chairman of the Holocaust Educational Trust, said he would ask Home Secretary Jack Straw to investigate the allegations against Mr Kalejs. And he said that if there was sufficient evidence, Mr Kalejs should be prosecuted under war crimes legislation. If there was not enough evidence for a prosecution, the government should follow the example of the United States and Canada and deport him, he said.  “They only do that if they are sufficiently satisfied that a person is guilty of war crimes. They don’t want him in their country. If that is correct, we don’t want him in our country either,” Lord Janner told BBC Radio 4’s Today programme.”

So Janner says you can prosecute of deport elderly wrong ‘uns, but not investigate the claims of his paedophilia because his memory is a bit hazy…