The Princess Royal visits the Brandauer factory in Birmingham as part of its 150th anniversary celebrations.
She tells employees that they are part of an "incredible success story, one which is all the more remarkable for being a family firm operating at such a high level of technology.
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A member of public alerted the police after discovering the body.
West Midlands Police was among those who sent firearms teams to assist Greater Manchester Police last night.
He was convicted of 31 sexual offences against 18 children.