Adadpter US to UK is about $70.0 and yet another piece of crap hanging off the ceiling, so unless you are going back to US just buy a uk nato plug and solder away!! or buy your local avionics shop techie a case of cool ones and he will rattle it off in about 5 mins.
He might even have a shagged out old UK spec headset that can donate the plug (another case of cool ones).
It always pays to have a mate in the avionics shop - trust me!!
