The new missile will arm Typhoon when it takes over as the RAF’s principal ground-attack aircraft in 2019.
The work has created around 130 new jobs and sustains a further 270 existing jobs at MBDA’s sites in Stevenage, Bolton and across the company’s significant UK supply chain.
Brimstone is currently in use by the UK’s Tornado squadrons in Iraq and Syria as part of Operation Shader and has also been used on operations in Afghanistan and Libya.
Defence Secretary Gavin Williamson said:
“Our world-class defence industry is a key foundation on which our great military is built, and the weapons it produces like the pinpoint Brimstone missiles have been crucial in helping our fighter pilots on missions such as driving down Daesh territory in the Middle East. This massive £400m investment is a huge boost to the proud workforce equipping our Armed Forces and will create and protect hundreds of jobs across the country, bolstering both the power of the Typhoon jet and British prosperity.”
The programme will also allow the weapon to be further developed for use on future aircraft. Brimstone is among weapons being considered for use by the British Army’s new AH-64E Apache attack helicopters and the RAF’s next-generation Protector unmanned aerial system.