http://www.legislation.gov.uk/ukpga/2019/17/section/53/enactedOffensive Weapons Act 2019enKing's Printer of Acts of Parliament2019-05-20 PART 5 53 1 This section applies if a constable has reasonable grounds for suspecting that an offence under section 52, as that section applies to corrosive substances, is being or has been committed on school premises or further education premises. 2 The constable may enter and search the premises and any person on them for a corrosive substance. 3 If in the course of a search under this section a constable discovers a substance which the constable has reasonable grounds for suspecting to be a corrosive substance, the constable may seize and retain it. 4 The constable may use reasonable force, if necessary, in the exercise of the power of entry conferred by this section.