In North America including the type is SOP. There have been numerous occasions at uncontrolled airports when knowing the type has avoided a potential conflict as I realized the aircraft I was looking at was not the one I thought it was. I find the level of RT pedantry in the UK quite amazing but I suppose it doesn't matter much anymore since there isn't very much recreational aviation left in the UK.
One of my favorite RT exchanges. I was flying in the Yukon monitoring the Whitehorse Flight Service frequency when I heard the following exchange
-Whitehorse radio 180 ( ie Cessna 180) ABC
- Whitehorse radio, Hi Bob
- Hiyah Jack, hey I need my flight plan extended by 30 minutes I have to do a quick stop at Tea Cup lake
- Whitehorse radio... UHHH where's the lake again
- It's at the West end of trapper Browns trapline
- Whitehorse radio, Ahh got it, ABC check your VFR flight plan is amended to include your extra stop and 30 minute extension
- Great thanks, ABC