Typically it's US manufacted missiles fitted with UK designed and built warheads. eg: https://en.wikipedia.org/wiki/Trident_(UK_nuclear_programme) https://en.w

Typically it's US manufacted missiles fitted with UK designed and built warheads. eg: https://en.wikipedia.org/wiki/Trident_(UK_nuclear_programme) https://en.wikipedia.org/wiki/Trident_(UK_nuclear_programme) See also: https://en.wikipedia.org/wiki/Astraea_(nuclear_warhead) https://en.wikipedia.org/wiki/Astraea_(nuclear_warhead) There are / have been other nuclear warheads and bombs in the UK of both UK and US origin.