Un-known tree in garden - non-native

Un-known tree in garden - non-native

Observation - Un-known tree in garden - non-native - UK and Ireland. Description: Un-known tree in my parents' garden in Staffordshire. They say it loses it's leaves in winter, which surprised me. I have no idea what it is except that it's non-native. My parents want to know how much bigger it's going to get to decide whether to get

Un-known tree in my parents' garden in Staffordshire. They say it loses it's leaves in winter, which surprised me. I have no idea what it is except that it's non-native. My parents want to know how much bigger it's going to get to decide whether to get it pruned or not.