Plant identification... Plum, Damson, or something completely different?

January Man

We've got a few trees in our new house/garden which look like they've previously had the chop, but of which a lot of tall wispy branches have grown back.  

I'd like to know what they are if anyone can identify?  I'm thinking plum but might be waaayyyyy off the mark!  

I'd also be interested to know whether they will still be productive in this condition or if they've had their day?  

Many, many thanks

nutcutlet

I should think all that growth is coming from the rootstock, a wild plum type. 

pansyface

The area looks as if it has not been cultivated for some time.

The shoots look like suckers from a now removed plum tree.

Plum trees are grafted onto rootstocks so what you are looking at are shoots from the rootstock of an old, lost plum tree.

Old plum trees were typically grafted onto Prunus cerasifera rootstock, which was prone to suckering.

See more here about Prunus cerasifera.

https://en.m.wikipedia.org/wiki/Cherry_plum