Chemical Weapons (Prohibition) Act 1994

If a national inspector has reasonable grounds for suspecting that there may be on any premises particular evidential material, the inspector may:

with the consent of the occupier of the premises; or

under a warrant issued under section 58 or 63;

search the premises for the evidential material; and

if the inspector finds the evidential material on the premises—seize the evidential material found on the premises.

A national inspector is not entitled to exercise any powers under paragraph (1)(a) in relation to premises if:

the occupier of the premises has required the national inspector to produce his or her identity card for inspection by the occupier; and

the national inspector fails to comply with the requirement.