London sent more than 3 million tonnes of excavated railway soil to an Essex island to help rebuild coastal wetlands; a decade after seawalls were breached, the reserve reported a record 39,000 wintering birds

• Ten years after seawall sections were removed to allow the sea back onto Wallasea Island, the RSPB reserve has recorded nearly 40,000 birds wintering there, including thousands of Knot, Avocets, Grey Plovers and Bar-tailed Godwits.
• The site, known as Jubilee Marsh, is part of the RSPB