Sizewell Court Case
Posted: 12th December 2025
Activists fight plans for nuclear power station over threat to rare bird. Ed Miliband’s plans to build the Sizewell C nuclear power station are facing a High Court legal threat over claims it will destroy a rare bird habitat. Activists are seeking a judicial review to force the Government to revisit plans for the project, which they say is being built on land occupied by endangered marsh harriers. In a hearing on Tuesday, the Together Against Sizewell C (TASC) campaign group raised concerns over Sizewell C’s plans to build 10-metre-high flood defences on Suffolk marshland. They argue that this will threaten the marsh harrier, a rare bird that was almost driven to extinction before enjoying a recovery in recent years, particularly alongside the Suffolk coastline. The group claims that details of the flood defences were omitted from the original planning proposals in 2022. This now forms the basis of the group’s argument, as it claims that work on Sizewell C should be paused while a further environmental assessment is carried out. Chris Wilson, of TASC, said: “TASC’s legal challenge focuses on two additional sea defences that Sizewell C has committed to installing – but despite EDF, who is building Sizewell, being aware of the potential need for them since 2015, they were not included in their planning application for the project. Rowan Smith, the solicitor at Leigh Day representing TASC, said: “The failure to assess these impacts was alarming. “Our client is concerned about the revelation that provisions have been made for further flood defences at Sizewell C, which could harm the environment, yet the impact of this has never been assessed.”