All fresh, frozen and smoked salmon and fresh and frozen trout caught in Great Britain must be pre-entered at export on the Single Administrative Document (SAD) Form C88, which must include a declaration of legal capture by the exporter.
In England and Wales, the Salmon and Freshwater Fisheries Act 1975 forbids export of salmon or trout which are "unclean" - ie they have recently spawned and not yet recovered from spawning - or those caught outside the commercial fishing season.
In Scotland, section 22 of the Salmon Fisheries (Scotland) Act 1868 provides that salmon caught between 15 September and 4 February, except for those reared on fish farms, may not be exported.
Section 2(1) of the Trout (Scotland) Act 1933 forbids the export of trout measuring less than eight inches long or any trout caught outside the commercial fishing season.
Any person presenting prohibited salmon or trout for export is subject to penalties or summary conviction.
There are no legal prohibitions on exporting salmon or trout from Northern Ireland.