My Lords, the amendments in this group seek to change the language used in relation to the equipment interference regime and Computer Misuse Act offences. Clause 13 provides that an equipment interference warrant under the Bill is mandatory if the intelligence service considers that the conduct would constitute a Computer Misuse Act offence and there is a British Islands connection. Similarly, Clause 14 provides that law enforcement agencies will be unable to authorise this type of equipment interference under the Police Act 1997 where the applicant considers that the conduct would constitute an offence under the Computer Misuse Act. This is an important safeguard.
The language in Clauses 13 and 14 reflects the fact that at the point of application the equipment interference agency may not be able to say with complete certainty whether the proposed interference will constitute an offence under the Computer Misuse Act. For example, when an MI5 officer is handed a compact disc by a source, it may not be clear whether the disc belongs to the source who intends the officer to use the disc, in which case the Computer Misuse Act would not be engaged, or whether it is owned by another person who does not intend the officer to access the disc, in which case the Computer Misuse Act would be engaged. In these circumstances, the applicant will need to consider the possibility of an offence occurring, consult legal advisers, where unclear, and seek the appropriate authorisation, if required. The language of the Bill reflects that it may not be certain whether the Computer Misuse Act is engaged. The language in the Bill and the code of practice anticipate that applicants will err on the side of caution.
Finally, and crucially, all equipment interference will be overseen by the new Investigatory Powers Commissioner, ensuring that there is independent and objective analysis of any decision regarding the possibility of conduct constituting an offence under the Computer Misuse Act. I hope that explanation will be helpful to the noble Lord and explains why this language is in the Bill. I therefore invite him to withdraw the amendment.