PGMs have a history that could politely be described as interesting.
Although they are MBDA weapons, design authority has always resided in the US. They originated with ISC (International Signal and Control) which was working with the Culinary Institute of America to deliver precision guided weapons to America's loyal ally, Iraq. The cover was that the contract was with the UAE.
The contract looked so good that Ferranti paid GBP700 million for ISC in 1987. The MoD smelt a rat - there were a lot of bombs in the contract for the UAE - but the business kept going until relations between the US and Iraq became less cordial. The contract and ISC then became unprofitable and the debt took Ferranti down. It was acquired by GEC Marconi, which became part of BAE Dynamics and then part of MBDA.
ISC founder James Guerin ended up on multiple charges. He tried the "the Culinary Institute made me do it" defense. The Culinary Institute said "James who?" and Mr Guerin became a guest of the Federal government for an extended vacation.
Ghastly mess detailed here: http://www.iraqwatch.org/government/UK/Scott%20Report/e5.htm
Current status: http://www.mbda-systems.com/mbda/site/FO/scripts/siteFO_contenu.php?lang=EN&noeu_id=157