Church launches investigation into how Welby dealt with complaints about an alleged serial abuser

This programme can reveal that the Church of England has launched an investigation into how the Archbishop of Canterbury, Justin Welby, dealt with complaints about a serial abuser of young men.

John Smyth was alleged to have beaten dozens of young men in the 1970s and 1980s.

One of those abused has now written to the Church of England, launching a formal complaint against Mr Welby, saying he failed to act properly when he learnt of the abuse.