thanks for the record rosie; I removed quite a bit of Berberis aquifolium from this area but haven't had the time to follow up... there are so many weeds - quite overwhelming.
Tell me Michael! my friend Sabine and i went on a mission one day to cut and dab Berberis in the grassy woodland nature reserve east of MacKenzie street; we stopped counting at 1000.... Our concern is that it grows in nearby gardens which provide a continuous source.