The world’s largest working offshore wind farm, occupying an area of 55 sq. mi., opened in the Irish Sea off Barrow-in-Furness in the North West of England in Sept. 2018. HR Wallingford has been helping Danish operator, Ørsted, to build stable cable crossings for their new Walney Extension windfarm, on what is becoming an increasingly congested seabed. The U.K. has