FASE is intended to deliver next-generation air-to-air effectors able to engage a broad range of targets from multiple platforms, including future crewed and uncrewed aircraft. Pollard told Parliament in September last year that the programme was in its pre-concept phase, with work under way to establish a concept phase. The decision also follows the memorandum of understanding signed by the UK and France on 1 April to conduct a 12-month joint study into a Meteor successor, a deliverable of the Lancaster House 2.0 treaty that will assess the future threat environment, identify candidate technologies and set a development roadmap, overseen by a new joint Complex Weapons Portfolio Office.