Ok I found it this is the reason that airport security are able to confiscate items such as sellotape and hammocks:
the last bit 'part C' allows just about anything to be confiscated :shock:
Any article to which section 4 of the Aviation Security Act 1982 applies:
a. any firearm, or any article having the appearance of being a firearm, whether capable of being discharged or not;
b. any explosive, any article manufactured or adapted (whether in the form of a bomb, grenade or otherwise) so as to have the appearance of being an explosive, whether it is capable of producing practical effect by explosion or not, or any article marked or labelled so as to indicate that it is or contains explosive; and
c. any article (not falling within either of the preceding paragraphs) made or adapted for use for causing injury to or incapacitating a person or for destroying or damaging property, or intended by the person having it with him for such use, whether by him or by any other
person."
the last bit 'part C' allows just about anything to be confiscated :shock: