Can’t mistake this one, Avro Anson.
Or maybe I can.
Nope, it’s an Airspeed oxford. Found the markings here, http://www.adf-serials.com.au/nz-serials/nzoxford.htm
Built by Airspeed Ltd, Portsmouth, England. BOC with Unit No.1, Hobsonville on 19 August 1940. Sold to J. Gould from Woodbourne on 10 July 1947 on WARB release number 8629.”
Oxford pics from the net
Anson pics from the net