My Lords, I regard this group and the next as essentially probing the Government on the use of polygraphs in relation to those convicted of serious terrorism offences. Like the noble Baroness, Lady Hamwee, I attended the briefing last week, during which the potential use of polygraphs was explained; I also found it useful. As I understand it, polygraphs will be a tool—not instead of anything else—to assist in monitoring by the National Probation Service of offenders who have been convicted of serious terrorist offences and are considered at high risk of causing further serious harm.
I need a little convincing that their use in monitoring sexual offenders is really a terribly useful precedent for the challenge presented by serious terrorist offenders, who often have particular ideological convictions which may make detecting lies or inconsistences rather a different challenge from serious sexual offenders, although I understand that polygraphs have been used by the National Probation Service since about 2013.
I suspect piloting may not be particularly easy, given the numbers involved. We all know from the terrible events following, for example, what happened at Fishmongers’ Hall how challenging it is to assess whether someone has been successfully rehabilitated or not. During the last group, the noble Lord, Lord Marks, stressed how important it was for there to be “effective deradicalisation”. I am sure all noble Lords agree that is a desirable aim, but it is something of a holy grail. As we discussed in Committee last week, effective deradicalisation has been a significant challenge for those responsible for managing offenders, not just in this country but in many others where Islamic terrorists and other extremists have presented problems.
I understand the primary purpose of this Bill to be protecting the public from the very serious consequences of offences committed by these offenders. That does not preclude the possibility of rehabilitation, but I think the balance in the public’s view is very much in favour of protecting them.
I understand that there will be an internal review of this polygraph testing—the noble and learned Lord, Lord Stewart, said so in response to a previous group—and that it is considered that it may involve something like 150 offenders, a relatively small cohort. He also said the responsibility for these offenders might, as I understand it, eventually be transferred to a specialist branch of the National Probation Service—the NSD. Experience of handling terrorist offenders in particular would certainly be desirable.
Although I look forward to the Minister’s response, this process of assessing how best to assist in monitoring serious offenders seems very challenging. Those with that responsibility need all the help they can get, given the difficulties they will encounter. At the moment, I see considerable advantage in using these polygraphs.
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