My Lords, my noble friend Lady Hamwee has explained Amendments 19 and 20 to the House, and it would serve little purpose to repeat that as we will not be dividing the House on them.
As my noble friend has said, compulsory polygraph tests for those convicted on licence from prison are one thing, but such tests for those not convicted of any offence, who have a right to silence when being questioned, is quite another. It is a long-established principle that a suspect in criminal proceedings should be protected from any adverse consequences of remaining silent. Clause 38 allows the Secretary of State to impose a requirement for an individual subject to a TPIM to participate in polygraph sessions and to comply with instructions given to the individual by the polygraph operator. Although any statement made by the individual while participating in the polygraph session cannot be used against them in any proceedings for an offence, a failure to answer questions could be taken as contravening a measure specified in a TPIM notice—that is, to comply with the instructions of the polygraph operator, so, in this case, the instruction to answer questions. Remaining silent during a polygraph session could therefore be an offence under Section 23 of the Terrorism
Prevention and Investigation Measures Act 2011, for which the individual is liable on conviction to imprisonment for a term not exceeding five years.
If the person is convicted of a terrorism offence and is on licence and subject to a TPIM—unlikely but possible—it would be possible for them to be subjected to polygraph tests under Clause 32 of this Bill, and a failure to answer questions in those circumstances would be a breach of the licence. While we have reservations about that, we do not object to it being part of the Bill. However, if the person is not convicted and is subject to a TPIM, they have the right to silence and to be protected from any adverse consequences of remaining silent. Potentially being imprisoned for five years for failing to answer questions during a polygraph session is an adverse consequence, and we therefore intend to test the opinion of the House on whether Clause 38 should be part of the Bill.