Alex,
I dont say it is impossible, but very improbable that a low time FAA CPL will find work in the UK. There are a fair amount on "N" reg machines, but in the Biz-jet market it is very tough if you dont have a connection or 1500+hrs. However, if you are prepared to travel the world, there are lots of U.S. companies that do contracts on C208's to 747's that you could work your way up in to get the required experience.
Good luck