Mitsubishi I Car Engine Swaps

[Chaessington]

I have two Mitsubishi i cars located in London, UK (see images below). We absolutely love these cars, but unfortunately, diesel was mistakenly put into one of them. I'm looking for someone who could swap the engine from the black car into the blue car. My questions are: Is it possible to simply swap the engines, and where can I find someone who could do this for me?