The 15 British navy personnel released from Iranian captivity on Thursday say they were kept blindfolded, put in isolation and threatened with seven years in jail during their ordeal.
Seven of the crew have been speaking about their experience after they were seized by Iran in the Gulf almost two weeks ago.
They were released in Tehran on Thursday and returned home to Britain yesterday.
At a news conference today, members of the crew said that while they had been held captive they had been subjected to 'constant psychological pressure'.
The sailors - 14 men and one woman - said they were told if they did not admit they had strayed into Iranian waters they faced seven years in prison.
Royal Marine Captain Chris Air said that the only woman among the group, Faye Turney, was separated from the men straight away and later told that the men had returned to Britain and she was now alone in Iran.
Lieutenant Felix Carman added that he was not aware of any reports of concessions made by the British government to secure their release.
Iran has reacted to the claims by saying the news conference by 15 British Navy personel was staged to cover up their illegal entry into Iranian territory.
A statement from Iran's Foreign Ministry said such staged moves can not cover up the mistake made by the British personel who illegally entered Iran's territory.
Meanwhile The White House has denounced Iran's treatment of British sailors, saying Iran did not seem to engage in appropriate behavior in dealing with the sailors.
