@izzythepush,
Considering the state of your conservative party, I don't think it would be a good idea for Republicans to go looking in the UK for candidates, even American born ones.
A lot depends upon what happens in the next three years.
If we haven't suffered a major economic fall off, I expect that the GOP will take a page from the Democrat Playbook and nominate someone who is relatively young, a bit flashy (to the extent Republicans can be) and who has a direct connection to a "minority" voting bloc. (I used the quotes since its factually inaccurate to describe women as a minority).
I doubt any of them will cause me to be enthralled.