Cutting edge technology is "vital" to the future of the UK and the armed forces, David Cameron will say.
The Prime Minister is expected to emphasise the role defence technology plays in the UK economy in a speech in Farnborough later today:
Having modern, technologically advanced and flexible Armed Forces to protect us and our interests is vital.
Because of the difficult decisions we have taken to tackle the deficit we are able to make these vital investments in our defence capabilities.
We are also taking action to sustain our thriving defence industry, as part of our long-term economic plan to back business, create jobs and secure a brighter future for hardworking people.
More top news
Ben Moynihan attacked three women in random stabbings when he was 17 because he could not lose his virginity.
The cable car at Ciampinoi in Italy ground to a halt after high winds blew a tree over the cable deeming it unsafe.
A school has defended its decision to stop a pupil taking part in World Book Day while wearing a Fifty Shades costume.