Right well:
1. Dafodil (sometime called Dilly), performed by Louise Gold.
2. Doctor Wizardo (a computer game character)
3. Datz (Ditz's clown brother, actully an old paper bag "Never trust an old paper bag)
4. Bratty Rat, performed by Jerry Nelson (he sang a duet with Raisin - one of those wonderful Jerry & Louise duets - this one actually had lyrics by Jerry Nelson!)
5. Raslebath (a ghost bear)
6. Humble Gary, performed by Mike Quinn
7. -
8. Magic Fish, performed by Mike Quinn (in one episode Raisin kidnapped the Magic Fish causing time to stop).
I think number 7 was somehow mixed up with one of the Beamland stories, maybe it was one of the old toys in Beamland. Not sure.
Hope that helps