Britain must have bought theirs before Stark left the weapons industry.
I have written two point five fics involving a crossover with the Avengers!movieverse:
‘Iron Man of Winterfell’ - [Fanfiction.net] [Archive of Our Own]
It’s been generations since the War of the Seven Kings in Westeros and Tony Stark is the new Lord of Winterfell.
This series has a side tale ‘Wolf of Snow’ [Fanfiction.net] [Archive of Our Own]
‘Fire & Ice’ - [Fanfiction.net] [Archive of Our Own]
Daenerys Stormborn, one of the last of the great house of Targarayn, is lost in the world. She might not be alone, however, as she finds herself befriending a boy from another world
I’ve also recently become enamoured with the idea of Sansa Stark as the companion of the Tenth Doctor.