(1)  A police officer executing a warrant issued under the Search Warrants Act 1997 in relation to premises may –

(a) arrest any person on the premises whom the police officer believes on reasonable grounds to be committing or to have committed an offence under this Act; and

(b) search any person found on the premises and detain any such person for that purpose.

(2)  For the purposes of enabling the execution of a warrant referred to in subsection (1) , a police officer may use such animals or devices and be accompanied by such assistants as the police officer considers necessary, and every such assistant has, while in the company of the police officer named in the warrant, the same powers to execute the warrant as the police officer.