Defence Secretary Michael Fallon met his Swedish and Finnish counterparts at a signing event welcoming the two countries to the Joint Expeditionary Force.
NATO Allies are increasingly working to share the burden of acquiring expensive defence equipment the alliance says.
Germany and Norway have officially joined the NATO programme to acquire Airbus A330 Multi-Role Tanker Transport aircraft.
Six NATO Allies announced their readiness to work together in developing and fielding follow-on solutions for their existing maritime anti-submarine and intelligence, surveillance and reconnaissance aircraft.
The Secretary General said the four recently deployed battlegroups send a powerful message to Russia that NATO stands as one.
Leonardo has signed contracts worth more than £100 million with Airbus to provide avionics maintenance for both German and Spanish Eurofighter Typhoon fleets.
The M-346FA is, Leonardo claim, a light fighter aircraft capable of carrying out operational missions at far lower costs than those of front-line fighters.
Saab have completed a successful first flight of what they're calling the 'next generation smart fighter', Gripen E.