Investigation launched following explosion at factory belonging to Britain's biggest defence firm

A company spokeswoman said no-one had been injured and everyone had been accounted for

A display of munitions produced at BAE Systems in Glascoed, South Wales (PA)

An investigation has been launched following an explosion at a factory belonging to Britain’s biggest defence firm.

BAE Systems said the incident occurred at its site in Glascoed, Monmouthshire, South Wales, on Wednesday morning.