Since the Meridian is basically a Malibu with turbine (and the Malibu being, as far as some CAA's are concerned, stuck with a pretty bad rep) I'd start with checking with your own CAA as they should have a list of training providers. Since the Malibu doesn't (not in Sweden anyway) qualify as a SEP when it comes to being allowed to fly all SEP's if you're current on one, maybe all you need is a difference training and checkride assuming that you're already "rated" on the Malibu.
I know that LidAir in Sweden, Stockholm, has an instructor that used to fly the Meridian. Perhaps you can contact them and ask if he can help you.