Green groups say European Commission is ‘chief roadblock’ to its own plans, as report finds poor progress four years on Green groups say European Commission is ‘chief roadblock’ to its own plans, as report finds poor progress four years on Harmful compounds in children’s nappies and toxic “forever chemicals” in everyday products are among 14 hazardous substance groups hit by lengthy delays to EU pollution controls, according to report findings described by scientists as “extremely frustrating”.