Steve,
Just done a quick run through the ones I know of on the Uk register. I believe the numbers are something like this:
Police/EMS/AOC/Private
CURRENT NEW SOON
EC135 7/2+/1/2 4/Some/?/1+
902 4/2/?/? 1?/??/?/?
As you can see my knowledge of the 902s is less complete than 135. Bond have an order book for EMS aircraft but I do not know when delivery is due. I have probably missed some too.
Anybody who wants to know excatly could spend some money with the CAA register.