This was bugging me..hence my dither earlier.
I was sure I recognised the leaves with red new growth...struggled with square stem.
It is a shrub...eventually a tree.
Think I have got it.
If you look carefully the young stem does have very narrow wings.
quote from above link...scroll down.
Stems are slender, often almost squarish, with prominent wings. Older stems are smooth and exfoliating."
Look closely at your 1st pic in fingers...small wings visible.