Dawkins and Hitchens believe the Pope would be unable to claim diplomatic immunity from arrest because, although his tour is categorised as a state visit, he is not the head of a state recognised by the United Nations.
They have commissioned the barrister Geoffrey Robertson and Mark Stephens, a solicitor, to present a justification for legal action.
The lawyers believe they can ask the Crown Prosecution Service to initiate criminal proceedings against the Pope, launch their own civil action against him or refer his case to the International Criminal Court.
Dawkins, author of The God Delusion, said: “This is a man whose first instinct when his priests are caught with their pants down is to cover up the scandal and damn the young victims to silence.”
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