11.—(1) These Regulations expire at the end of the period of 28 days beginning with the day on which they come into force.
(2) The expiry of these Regulations does not affect the validity of anything done pursuant to these Regulations before they expire.
(3) The expiry of these Regulations does not prevent the taking of enforcement action under Part 3 in relation to any offences alleged to be committed before the date of expiry of these Regulations and, for this purpose, the Regulations are to be treated as if they had not expired.