"Adrian" ay@no-spam-liquisol-com wrote in message

I'll be putting in a couple along the side fence, and would like
something that is deciduous, non-invasive, medium height (say up to
5m), and has attractive autumn colour.

5m high is a very small tree and really more like a large bush. A snawball
tree would fit that description (viburnum opulus sterile)

A smallish neat tree that I like and one which responds well to pruning and
is neither too dense nor too anything is the Chinese elm.