There are none in Europe. Farnborough got rid of theirs about 12 months ago. There is an old King Air 350 sim in Norway I think. The only other JAR approved sim is in FSI Toronto.
There are 1 or 2 operators in Europe that will do recurrents and maybe initial ratings on the aircraft.
There are plenty FAA sims in the US.
ps, London met have a FNTP type King Air cockpit, not a B1900 sim.