I live in London, UK and have had this shrub in my garden since I moved in 2 years ago. It looks like it has been shaped/pruned.
Two years ago, there were tiny green leaves which turned red in autumn. And the plant sets tiny berries. Last year, the plant didn't have as many leaves (probably 10% of the year before) and there is only 1 berry that I can spot on the plant now.
Can someone identify the plant for me please? And why it may have a lesser leaf + berry flush?