R (Seiont, Gwyrfai and Llyfni Anglers’ Society) v Natural Resources Wales has a long history. That’s not meant to be a fairy tale opening: it actually has legal relevance.
Article 2(2) of the environmental liability Directive provides the following definition: “ ‘damage’ means a measurable adverse change in a natural resource or measurable impairment of a natural resource service which may occur directly or indirectly.” ‘Environmental damage’ is further defined in Article 2(1), providing a variety of layers which need ‘unpacking’ in the words of Hickinbottom J. He concludes, after lengthy and instructive analysis, that “damage” as defined in article 2(2) of the EL Directive is restricted to a deterioration in the environmental situation, and does not in addition include the prevention of an existing, already damaged environmental state from achieving a level which is acceptable in environmental terms – or a deceleration in such achievement. Since “environmental damage” is a subset of “damage”; “environmental damage” necessarily has that same restriction.
The judgment is very considered and there is not much point in repeating it here: please refer to the text for a thorough read on the ELD, the water framework Directive, habitats and much more.