Any water bailiff may exercise in any district adjoining that of the district board by which he was appointed any power which he may lawfully exercise in the district of such board.

The production by a water bailiff of the instrument of his appointment purporting to be signed on behalf of the district board by whom he was appointed, or of any badge or other device indicating his appointment and purporting to be issued by such board, shall be a sufficient warrant for the exercise of any power conferred on such water bailiff by or in pursuance of this Act or of the Salmon Fisheries (Scotland) Acts 1828 to 1868.

Any constable may exercise in relation to any water any of the powers specified in subsection (1) of this section.

Any person appointed by the Secretary of State in that behalf may exercise in relation to any water any of the powers specified in subsection (1) of this section, and the production of the instrument of his appointment purporting to be signed by or on behalf of the Secretary of State shall be a sufficient warrant for the exercise of any such power.

If any person refuses to allow a water bailiff, constable, or any person acting in pursuance of the last foregoing subsection to exercise any power conferred on him by or in pursuance of this Act or of the Salmon Fisheries (Scotland) Acts 1828 to 1868, or obstructs a water bailiff, constable, or any such person as aforesaid in the exercise of any such power, he shall be guilty of an offence against this Act.

A sheriff or any justice of the peace, if satisfied by information on oath that there is reasonable ground to suspect any offence against any of the provisions of sections F11 to 4, 7 and 7A of this Act to have been committed and that evidence of the commission of the offence is to be found on any premises or in any vehicle, may grant a warrant authorising any water bailiff, constable or person appointed by the Secretary of State in pursuance of the last foregoing section at any time or times within one week from the date thereof to enter, if necessary by force, the said premises and every part thereof or the said vehicle for the purposes of detecting the offence.

A person authorised by any such warrant as aforesaid to search any premises or any vehicle may search every person who is found in, or whom he has reasonable ground to believe to have recently left or to be about to enter, those premises or that vehicle, as the case may be.

Where a constable has reasonable grounds for suspecting that an offence against any of the provisions of sections F11 to 4, 7 and 7A of this Act has been committed, and that evidence of the commission of the offence is to be found in any vehicle, but that by reason of urgency or other good cause it is impracticable to apply for a warrant to search such vehicle, the said constable may stop and search that vehicle and any person who is found in, or whom he has reasonable grounds to believe to have recently left or to be about to enter the said vehicle.

Where a constable has reasonable grounds for suspecting that an offence against section 7A of this Act is being committed and that evidence of the commission of the offence is to be found in any premises (other than a dwelling-house or any yard, garden, outhouses and pertinents belonging thereto or usually enjoyed therewith) but by reason of urgency or other good cause it is impracticable to apply for a warrant to search such premises, he may search them without warrant.

Any person appointed by the Secretary of State in pursuance of the last foregoing section may exercise in relation to any water the powers conferred upon a water bailiff by virtue of this section.

No female shall in pursuance of any search authorised by this section be searched except by a female.

If any person shall be found committing any offence against the provisions of Part I of this Act, the provisions of section twenty-nine of the M5Salmon Fisheries (Scotland) Act 1868 (which relate to the apprehension of offenders), or, where the offence relates to the River Tweed, the provisions of section thirty-eight of the M6Tweed Fisheries Act 1857, shall apply in respect of that person as if he had been found committing any of the offences referred to in the said section twenty-nine or in the said section thirty-eight.

No person other than a water bailiff F6... or person appointed by the Secretary of State in pursuance of section ten of this Act shall have power by virtue of the said section twenty-nine to seize and detain any person who shall be found committing an offence against the said Act of 1868; and accordingly the said section twenty-nine shall have effect as if for the reference to person where that word first occurs there were substituted a reference to a water bailiff F6... or person appointed by the Secretary of State as aforesaid.

No person other than a water bailiff, constable or person appointed as aforesaid shall have power by virtue of section thirty-eight of the M7Tweed Fisheries Act 1857, to seize and detain any person who shall be found committing an offence against that Act, or the M8Tweed Fisheries Amendment Act 1859; and accordingly the said section thirty-eight shall have effect as if for the reference to other person there were substituted a reference to a constable or such person as aforesaid.