Taking iNaturalist suggestion
The fused petals forming a tube like flower and woody shrub are common characteristics in the Ericaceae family.
From the genus Epacris with its solitary flowers of 5 sepals, fused that are hermaphrodite with both reproductive organs present. Its leaves are also simple and without stipules.
Ive identified it as the Epacris longiflora Cav. due to its flowers having red tubes and white lobes. (sometimes all red, or all white)
Its woody stems with spiked heart shaped leaves forming an erect spreading shrub are also good indications for a match.
The plants inflorescence, hard leaves and woody stems are key characteristics in the Proteaceae family.
It is in the Isopogon genus with its alternate terete leaves, that are divided/narrow and its terminal inflorescences in cone-like structures.
Ive identified it as the Isopogon Anethifolius due to its yellow flowers arising from a dense globular mass of furry protective bracts.
Its leaf shape, habitat and flowering time (Sept-Nov) are also good indications for a match. As detailed in the Field guide to native plants in Sydney.
This plant is recognised as a Fabaceae due to it's recognizable flower shape. The plant was also a shrub.
The genus is Pultenaea, which is found in Australia, and due to the plant having alternate leaves and yellow-orange flowers.
The plant is identified as Pultenaea villosa due to it being a erect shrub, stems and leaves have curly hairs, small and narrow leaves and flowers were terminal. The species was also checked with the city of ryde flora and fauna surveys for the field of mares reserves where the species were the only one that fits the discription.
Other possible options for the local area were Pultenaea flexilis and Pultenaea tuberculata which both had leaves longer than observed.