Salmon and fresh water fisheries act 1975
1 Prohibited implements.
(1)Subject to subsection (4) below, no person shall—
(a)use any of the following instruments, that is to say—
(i)a firearm within the meaning of the M1Firearms Act 1968;
(ii)an otter lath or jack, wire or snare;
(iii)a crossline or setline;
(iv)a spear, gaff, stroke-haul, snatch or other like instrument;
(v) a light;
for the purpose of taking or killing salmon, trout or freshwater fish;
(b) have in his possession any instrument mentioned in paragraph (a) above intending to use it to take or kill salmon, trout or freshwater fish; or
(c) throw or discharge any stone or other missile for the purpose of taking or killing, or facilitating the taking or killing of any salmon, trout or freshwater fish.
“setline” means a fishing line left unattended in water and having attached to it one or more lures or baited hooks
there are no exceptions within the law