 A water bailiff or other officer of the Agency who on any occasion finds a person who he has reason to believe is committing, or has on that occasion committed, a fixed penalty offence (see below), may require that person to state his name and address.A person holding a fishing licence for any area may, on production of his licence, require any person who is fishing in that area to produce his licence or other authority to fish and to state his name and address.If any person required to produce his fishing licence or other authority or to state his name and address fails to do so, he shall be guilty of an offence; but if within seven days after the production of his licence was so required he produces the licence or other authority at the appropriate office of the Agency he shall not be convicted of an offence under this section for failing to produce it.