I wonder if this is Telopea oreades, look behind and below the flower and you can see some seed pods hanging. The flower appears to be making seeds at the end of 'stamens' which drop down when mature.
It's also hardier than most as it grows far south, mostly on the western edge of Victoria as shown on the wiki map.
https://anbg.gov.au/telopea/te...
http://www.redorbit.com/educat...
Or, as mentioned on wiki, it could be a cross withTelopea speciosissima, one of the Shady Lady series but they look much fuller than this one.
https://www.google.co.uk/searc...
