National Security Bill (Seventh sitting)

Sally-Ann Hart Excerpts

Committee stage
Tuesday 19th July 2022 Public Bill Committees

For that reason, we will be following their use carefully and will await a proper assessment of the use of polygraphs in the next annual review; I hope the Minister can be clear about how he envisages them working.

[Sally-Ann Hart (Hastings and Rye) (Con)]

There have been several reviews of polygraph accuracy, and they are accurate about 80% to 90% of the time. Although they are far from foolproof, they can detect lies, thoughts and intentions to deceive. They are already used in the UK for probation purposes, and their use can encourage people to tell the truth. Along with the other measures in the Bill, they will have their use.

[Stuart C. McDonald]

As the shadow Minister, the hon. Member for Halifax, set out, clause 32 introduces the power to impose STPIMs on an individual via a part 2 notice, and schedule 4 sets out the types of measure that can be imposed.

As I argued on Second Reading, none of us should ever feel comfortable about curtailing people’s liberties via administrative civil orders rather than as punishment for crimes that have been proven through trials. None the less, we acknowledge that such prevention and investigation measures are a necessary and useful part of combating terrorism, and our position on TPIMs has been to focus on trying to clip their wings, improve oversight and limit their invasiveness, rather than to oppose their use altogether.

We think that the balance of evidence shows a similar case for STPIMs. However, we should again be careful in our scrutiny of them, and not permit interference in people’s liberties without proper justification and appropriate limits and oversight. We welcome, for example, that the residence measures in paragraph 1 to schedule 4, which are among the most restrictive measures set out in that schedule, apply only to individuals who are thought to be involved in the most immediately serious activity. Some of the measures are broad, but they seem to be curtailed and properly restricted by the provisions in clause 33—which we will discuss shortly—ensuring that they cannot go beyond what is necessary, although we have some concerns about the various tests that the Secretary of State has to require before applying the measures.

As the Committee has heard, amendment 57 would take out paragraph 12 of schedule 4, on the use of polygraph tests as a means of assessing compliance. Our view is that as polygraph tests remain too unreliable and lack an evidence base, they are inappropriate tools for measuring compliance with STPIMs, especially in the light of the all the other means at the Secretary of State’s disposal, including the monitoring measures in paragraph 15 of schedule 4, as well as the full range of investigatory powers that the services have at their disposal. It is hard to see what paragraph 12 will add. As the shadow Minister said, polygraph tests are not currently used at all.

If there is a case for the use of polygraph tests and the Minister is keen to retain the power to impose such a condition, I ask him to consider removing their applicability in Scotland. There is a precedent for that: polygraphs were introduced for TPIMS in the Counter-Terrorism and Sentencing Act 2021, but during the Act’s passage, the Scottish Government indicated that they would not promote a legislative consent motion for polygraphs on the basis that, because polygraph testing is not currently used at all in the criminal justice system in Scotland, the fundamental change of introducing them should be a matter of principle to be determined by the Scottish Parliament.

The SNP welcomed the decision by the then Justice Secretary, the right hon. and learned Member for South Swindon (Sir Robert Buckland), who is now the Secretary of State for Wales, to remove the provisions on polygraphs that applied to Scotland. Following that concession, a legislative consent motion was eventually approved at Holyrood. If I recall correctly, the Northern Ireland Executive expressed similar concerns. We see no case for polygraphs, but we assume that the Minister does, and if he wishes to retain their inclusion in the Bill, we respectfully ask that he take the same approach as his right hon. and learned Friend by not applying the provisions to Scotland.