In a chilling letter written in prison the 56-year-old, who calls himself “The Gaffer”, said he had no regrets over what he did after pleading guilty to 25 rapes.

He said: “All that has come out of this is a long sentence for me.

“We were all getting on well before this came out – what went wrong? My daughters have got something out of this – kids. What have I got?

“I haven’t got any regrets, it’s too late for that. It should not have happened.”

A police source called the letter, written to the man’s brother, “evil beyond belief”.

He said: “Even now he sees himself as the victim. If let out I have no doubt he would attempt to carry on the abuse of his daughters because he does not think he has done anything wrong.