Without flowers, it is impossible to determine whether this is Billardiera macrantha, Billardiera mutabilis, or Billardiera scandens, all of which occur in the ACT.
As B. macrantha is described as growing mostly in moist sites at higher altitudes and B. mutabilis is also described as growing in moist sites, these 2 species seem much less likely than B. scandens which is described as growing in open forest which is the type of site where this plant was found. It has pale cream bell shaped (correa like) flowers and purplish sausage shaped berries, but none on the plant at the moment.