“While his abuse allegations against a member of clergy were fully dealt with by the Diocese of London, it is clear that a different complaint he subsequently made against me personally in 2020 was not properly dealt with,” she said in a statement.

“I am seeking assurance that processes have been strengthened to ensure any complaint that comes into Lambeth Palace is responded to in a timely and satisfactory manner.”

Earlier this week the complainant spoke to the Premier Christian website, saying that the way the case was handled had a serious impact on his mental health.

Premier said it had seen evidence that when the complainant filed his original case against an accused priest, Bishop Sarah contacted the priest involved about the allegations, breaching the Church’s disciplinary protocols.

The complaint against her was not formally dealt with and Lambeth Palace officials now say that they assumed the complainant no longer wished to proceed but are understood not to have sought confirmation of this with him.

A spokesman for Lambeth Palace said Church authorities had written to the complainant – known as N – to outline the next steps.

“The Bishop of London was unaware of the matter, as the process never reached the stage at which she would have been informed of the complaint or its contents.

“The provincial registrar has apologised to those involved and urgent arrangements are now being made for the complaint to be considered according to the relevant statutory process.”