Try tickerling it with a fine paintbrush. Perhaps its not being pollinated! I had fruit on mine the first year, not much fruit but some, each year a few more plums. If therearen't enough bees around you need to pollinate it yourself

u may need another one to go wth it .

When i planted my plum tree i planted two, one at each end of the garden it was about six years before i got enough friut for a crumble, good luck

Thanks everyone for your answers. There is no blossom so obviously no pollination!

I think my soil may be acidic (the hydrangeas on my street are pink!) - would that be the reason?

I recently got another plum tree (or may be damson) from a friend who was moving elsewhere and could not take the tree with her...so fingers crossed!

good news, had lovely juicy plums this year!

How is it doing now Nb?
We have a Vic Plum and they are not supposed to need another with it. They should be self pollinating (is that the term?!!)
We have had victoria for years and they do well as long as the blossom doesn't get caught by the frost!
One we had always did well, then one year is produced nothing, the following year it was so laden it broke the branches! - and after that it gave up the ghost!!
I think it over exhausted itself!!
They were super plums.

It has been doing very well since, touch wood, super sweet juicy plums and well-laden, must have been a late bloomer!