s 91 Taking possession of land, &c.
If the Secretary of State considers it necessary for the preservation of the peace or the maintenance of order, he may authorise a person— (a) to take possession of land or other property; (b) to take steps to place buildings or other structures in a state of defence; (c) to detain property or cause it to be destroyed or moved; (d) to carry out works on land of which possession has been taken by virtue of this section; (e) to take any other action which interferes with a public right or with a private right of property.