BBC: The Thames Barrier will protect London from flooding until 2070, the Environment Agency has said. A new study into London’s flood defences found the barrier should work for 40 years longer than expected. The nine concrete barriers in Woolwich Reach, south-east London, will need upgrading by 2035. By 2075, a new barrier should be built at Long Reach. The study was based on a worst case climate change scenario with sea-levels rising to 2.7m (8.9ft). The Thames …