On Sep 8, 12:41 pm, McGerm wrote:
It looks like a broom so it might be an escaped ornamental. Probably
not scotch broom since the leaves don't match; it may be one of the
160 species of other brooms (Genisteae) . It could also be something
like a flame pea or bush pea and a native to Australia.

Thanks for replying. Someone from the botannical garden has tracked it
down to be Aotus genistoides, pea family.
I am grateful for your help - Klaus