There are safety concerns over nuclear submarines at Devonport dockyard. It follows the failure of a nuclear ring main which caused a loss of power.
The local MP says he now wants a meeting with the owners of the Dockyard over the incident. From Plymouth, Bob Cruwys reports.
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The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.
The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Prime Minister Theresa May announced the decision from Downing Street.