Gavin Newlands, the Paisley and Renfrewshire North MP, talked about the issue during the speech, last week in the House of Commons.

The SNP politician said: “On the 11 January this year, 50-mph gales were battering the west coast of Scotland. As a result, high-sided vehicles were warned not to cross the Erskine Bridge over the Clyde.

“I am not sure about anyone else, but the very last thing I want driving over a 150-foot bridge during such high winds is a convoy loaded with nuclear warheads.

“Unbelievably, that is exactly what the Ministry of Defence chose to do.” John Ainslie, coordinator of the Scottish Campaign for Nuclear Disarmament, added: “The public should be protected by the highest safety standards at Faslane. This should be improving each year, not getting worse.” A MoD spokesman said: “The safety of the public is always our priority and we can be clear that convoys are conducted to the strictest safety standards. We always take into account factors such as road and weather conditions and consult with all relevant local agencies, including Traffic Scotland and Police Scotland.”