Unsure if this is a beetle larva so have placed it under 'Beetles' for now. A second one on the same bush is shown in previous sighting 4386013. There appears to be some destruction of the leaves where both insects have been.
@RogerF I checked the host this morning and found an identification sign in the ground close by but I'm not sure if this is the right information: B 9404792.3 Section 191t. Eucalyptus Stricta - Eucalyptus Burgessiana. Hope this helps. Tim
Just to throw in another option, the body shape kind of reminds me of the brown hoverfly larvae & green hoverfly larvae ( Syrphidae sp.) that I see eating aphids when my veges go to seed? I can see the head end as it tapers (& the bum end is pooping). Did you get to see how it moved ie did the head come to a narrowness like a maggot does as it crawls? Some examples for you in the link below: https://www.inaturalist.org/taxa/49995-Syrphidae/browse_photos?term_id=1&term_value_id=6
@DiBickers Thanks for the comment, Di. The sighting was some time ago now but I'm certain that I didn't see any movement at the time. I've kept an eye out for more of these over the years but haven't seen any. I'll check the link. Thanks, Tim