Factual and Procedural Background
This appeal arises from an Order dated 21st May 2014 dismissing a claim for judicial review brought by the Plaintiff challenging the Secretary of State for the Environment, Food and Rural Affairs' decision dated 29th May 2013. The decision directed Natural England to consent to Company A's culling of 552 pairs of Lesser Black-Backed Gulls and measures to maintain their population at a reduced level, as well as further measures to maintain the population of Herring Gulls at a previously reduced level.
The relevant site is a Special Protection Area (SPA) comprising estuaries designated for bird conservation, including the Lesser Black-Backed Gull and Herring Gull populations. Company A operates an aerodrome and aircraft manufacturing facility adjacent to the SPA, where bird strikes pose a significant safety risk, particularly from large gulls. Company A sought consent to cull large numbers of these gulls to mitigate this risk but received limited consent from Natural England. Following refusal of consent for the full cull, Company A appealed to the Secretary of State, who directed Natural England to consent to a partial cull and population control measures.
The Plaintiff challenged the Secretary of State's decision principally on the basis that the conservation objectives for the SPA were misinterpreted, rendering the consent unlawful.
Legal Issues Presented
- Whether the Secretary of State correctly interpreted the conservation objectives for the Lesser Black-Backed Gull and the breeding seabird assemblage within the SPA in deciding to consent to the cull.
- Whether the Secretary of State lawfully concluded that the proposed cull would not adversely affect the integrity of the SPA in accordance with Article 6 of the Habitats Directive and domestic regulations.
- Whether the Secretary of State properly applied the concepts of "favourable condition" and "natural fluctuation" in assessing population thresholds for the cull.
- Whether the Secretary of State's calculation of baseline population figures for the breeding seabird assemblage was rational and lawful.
Arguments of the Parties
Appellant's Arguments
- The Secretary of State misinterpreted the conservation objectives by allowing a deliberate reduction of bird populations to levels above 75% of the baseline, which is a proxy for the lower bound of natural fluctuation rather than a permissible target for anthropogenic reduction.
- The conservation objectives require maintaining populations at or above designation levels subject only to natural change, and deliberate culling to a fixed reduced level for a prolonged period contravenes these objectives.
- The Secretary of State wrongly relied on the favourable condition tables as thresholds permitting deliberate deterioration rather than as guides for natural fluctuations.
- The Secretary of State's approach undermines the integrity of the SPA and the aims of the Birds Directive.
- The baseline figure for the seabird assemblage should not have been recalculated excluding certain data points, as the Secretary of State's reasoning was unconvincing and potentially irrational.
Respondent's Arguments
- The Secretary of State was entitled to consider both the 2011 and 2012 conservation objectives together.
- The use of the 75% threshold as a proxy for maintaining favourable condition is consistent with the conservation objectives and the Guidance.
- The Secretary of State properly took into account natural fluctuations and external risks when determining safe population levels for culling and control.
- The recalculation of the baseline figure was a matter of planning judgment and was neither irrational nor unlawful.
- The Secretary of State's decision balanced conservation objectives with imperative public interest in aviation safety.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Sweetman v An Bord Pleanála (Case C-258/11) [2013] 3 CMLR 16 |
Interpretation of "integrity" of a site under Article 6(3) of the Habitats Directive as the continued wholeness and soundness of the constitutive characteristics of the site. |
The court endorsed the Advocate General’s opinion emphasizing that conservation objectives must be the basis for assessing adverse effects on site integrity. |
Court's Reasoning and Analysis
The court analysed the Secretary of State's interpretation of the SPA's conservation objectives, focusing on whether allowing a deliberate cull to reduce bird populations to above 75% of designation levels was consistent with maintaining the site's integrity.
The court noted that the 2011 conservation objectives and associated guidance distinguish between natural fluctuations and anthropogenic impacts. The 75% threshold in the favourable condition tables is intended to accommodate natural population variability, not to justify deliberate, sustained reductions through culling.
The Secretary of State's approach effectively permitted maintaining populations at the lower bound of natural fluctuation ranges for extended periods, which the court found inconsistent with the objective to maintain or restore populations subject only to natural change.
The court further examined the Secretary of State's baseline recalculation for the breeding seabird assemblage and, while critical of the reasoning, upheld it as a lawful exercise of planning judgment.
Ultimately, the court concluded that the Secretary of State misinterpreted the conservation objectives by applying a generic threshold designed for natural fluctuations to justify deliberate population reductions, thereby unlawfully consenting to the cull.
Holding and Implications
The court ALLOWED the Plaintiff's appeal and QUASHED the Secretary of State's decision dated 29th May 2013.
The decision directly affects the parties by invalidating the consent for the cull and associated population control measures granted by the Secretary of State. No new legal precedent beyond the interpretation of conservation objectives and application of the Habitats Directive was established.