It maybe worth talking to the medical specialist recruiters to see if they're happy granting a year's unpaid leave after investing £60K+ in your education without a return.
Nothing ventured, nothing gained and all that, but so far as I'm aware, the sun doesn't shine anymore than Joe Average when it comes to payback.
I am aware that RN Medics can get overseas placements after registration but gap years, I honestly don't know.
Let us know what they say - I'm in need of a good rant.
