Plum Tree Identification

Had a couple of pounds of plums from the plum tree in my garden. Not sure what variety it is but makes lovely jam and crumbles. Plums look blue on the tree, but it's like a powdery coating that rubs off when the plums are handled, leaving a dark reddish/purple skin.

There are several varieties of blue plums like Czar, but according to various websites, they're not due to fruit yet. Maybe the heatwave we had a few weeks back caused them to fruit early?

Czar type plum left, is that cherry plum on the right?

Found a plum tree up the road loaded with smaller red plums and red leaves. I can't find any matching pictures on the internet - would be handy to know what variety it is. Others have guessed it's called a red cherry plum - the plums are a cherry red colour so maybe that's it?

There are several of these trees planted out in the street and neighbouring streets, so could have a massive haul of plums. First come first served!