Former British hostage Norman Kember is unsure as to whether he will testify against his suspected captors who have now been arrested.

The Christian peace activist has been asked by police to give evidence against the people accused of holding him and three others captive in Iraq for 118 days before his release in March this year.

One of the hostages, American Tom Fox, was killed.

Speaking to Channel 4 News, Mr Kember said he was "very unhappy for a number of reasons and I would like to do an Amish act, that is I feel that forgiveness is the most positive thing we can do in this situation".

"I have yet to be convinced that [testifying] would be a sensible thing to do," he added.