Read
GID 25 pages 4 & 5 carefully. You'll find that you need 1500 hour PIC on a/c greater than 30t to get the speedy conversion.
For the aircraft types, I found them 2 years ago in the
JAA website. Warning, it is a long search that one.
william,
I have a document in my paw from the CAA that is 18 months old. For some reason they don't publish it online. Ring or email and ask for "Organisations conducting CAA and JAR-FCL approved courses of flight and ground training".
Note, you have to know what is acceptable to them for multi pilot. You could email them with your types and ask. Best to get it from them than from here.
I have found that if you more or less know the reg's and requirements then they can confirm your plan.
You could send them your log book
and 70 pounds
and let them tell you in writing what you need to do.