I promised this to Johnw a while ago and have just got around to taking some photos now. Please excuse the cluttered photographs, the thing is too heavy not to mention too spiky to move! Every time I touch it I end up bleeding. I hope this helps john.
Zanthoxylum simulans (flat spine prickly ash), about 7 or 8 years old now I think...
Close up of the leaves and developing fruit
Distinctive flat spines on the new growth
Spines are slowly engulfed by the bark as the tree grows.