Several weeks into the trial, Judge Bridge overruled motions from the defence counsel that the four written confessions obtained from their clients should be omitted from evidence due to their being extorted under extreme physical and mental pressure, instead citing the statements as admissible evidence. These written confessions were presented in evidence at the trial following an eight-day hearing conducted without the presence of the jury. The judge refused to allow the jury to view the written confessions, which would have disclosed not only that each of the four written confessions contradicted details contained within the three other confessions, but that they also contradicted testimony from forensic scientists delivered earlier in the trial as to the devices used to conceal the bombs, and the locations in which they had been placed inside the public houses. For example, William Power had claimed in his written confession that he had placed the bomb which devastated the "Mulberry Bush" public house by a jukebox at the foot of a staircase to the premises; whereas a forensic scientist named Douglas Higgs had testified on the fourth day of the trial that the bomb which had detonated within these premises had been left by a wall located towards the rear of the premises.