Yes, Steve, got moving on this one...
Removed the chassis, and the end balconies fell off, along with the saloon doors.
I could then insert a finger and prise the roof away.
Previous owner had installed lighting with a pair of large bulbs, and generously glued the windows back, sticking some of the roof tabs as well.
Managed to get them out and scrape xs glue away.
Masked up and re-spray under way.
One down, one to go.