I met a guy (on a RE Himalayan) riding with a TRF group last summer. He said it was cheaper and easier to fly home to the states, do it in one day over there, and then get the license switched to a UK one when he got back.
To my knowledge you can't swap a US license for UK one. You can drive in the UK on a US license (and VV) for a certain amount of time if you're non-resident. Insurance could possibly be tricky.
Oh and there are no learner restrictions or L plates. I rode around on a ZX10R on my provisional.
I met a guy (on a RE Himalayan) riding with a TRF group last summer. He said it was cheaper and easier to fly home to the states, do it in one day over there, and then get the license switched to a UK one when he got back.