The satellites are made in the USA, by, ironically, Airbus Space and Defence (who's largest shareholders are the French and German governments). OneWeb have said they will move manufacturing to the UK, but this was stated in a Select Committee meeting, so could well be simply blowing smoke up the collective 'arrises of their investors.
"This deal gives us the chance to build on our strong advanced manufacturing and services base in the UK, creating jobs and technical expertise."
The issue I have is they keep on describing the network as "cutting edge" without describing the breakthrough features of the project as well as a lot of talk about building up the UK sat mfg base, but of all the companies they pump half a billion pounds into, they choose one where at least SOME of the work is in the US.
Because the UK Govt and certain members of the British press talk this project up as 2) some kind of success for Brexit Britain and b) a potential replacement for Galileo, which Britain is no longer part of after leaving the EU.