Emergency services suppressed a huge blaze that broke out in the early hours at a BAE Systems shipyard yesterday in north west England that builds Britain's nuclear submarines.Earlier in the day pictures online showed what looked like flames and black smoke emerging from the top of the vast Devonshire Dock Hall building. Police said there was no nuclear risk.BAE Systems, Britain's biggest defence company, later said that while the affected area was only accessible for essential personnelā¦