http://www.legislation.gov.uk/ssi/2014/327/introduction/made ).
Summary of the new laws that will apply to our fishing:
No person may retain any salmon caught by rod and line in a salmon fishery district, or part of a salmon fishery district before April 1.
In this regulation—
“retain” means failing to return a fish at once to the river or other water from which it came and with the least possible injury.