 In a separate judicial review request the 51m Group challenged the government on several grounds, ranging from a failure to consult properly on the original or the revised route, consideration of the impact of HS2 on the London Underground network, and the environmental impact on the Chilterns Area of Outstanding Natural Beauty.51m also claimed that the hybrid bill approach was 'incompatible with the Environmental Impact Assessment Directive.Aylesbury Park Golf Club's proceedings are based on the impact of the proposed route which will pass through part of the club.