Reuters: Britain said on Thursday it was making up to 18 more sites available for the next generation of nuclear power stations and signalled an acceleration of its plans for new reactors. The UK’s Nuclear Decommissioning Authority (NDA), which owns 18 sites including two with operational reactors, issued a notice giving operators four weeks to pick the assets they wanted. And Business Secretary John Hutton said he expected the new generation of nuclear power stations to supply much …