Section 21 Other offences

without reasonable excuse contravenes any condition of a street trading licence, which is a condition of a kind specified in paragraph (b), (d), (e), (f) or (g) of section 7(1);

fails on demand and without reasonable excuse to produce his street trading licence or temporary licence to an authorised officer or a constable;

fails, on being required to do so under section 16(2), to state his name and address or states a name or an address that is incorrect;

in connection with an application for the grant, renewal or variation of a street trading licence or the grant of a temporary licence makes a statemen t which he knows to be false in a material particular;

resists or intentionally obstructs an authorised officer in the execution of his duties under this Act,