Hempy,
For the One or very few who did not divulge information....how many others did in fact break and give up valuable information? Were not most arrests due to Collaborators acting out of fear of arrest, torture, and death, most having been arrested themselves?
You do understand the Instruction given to SOE and Resistance Fighters was to hold out for 24-48 hours in order to allow for the rest of the Cell's Members to learn of the Capture and to be able to effect their escape and evasion plan. After that time period there was no real value to giving up some information to take the pressure of the one in custody as the others not in custody could be on their way to hiding places and take actions to elude capture.