Looking at the information from the papers for identifying at this link, I think it's the species I've suggested. https://www.inaturalist.org/journal/dhobern/24264-australian-calopompilus-species
@SimoneC I am notoriously bad at judging sizes of what I submit. The wider version of one of the shots shows part of one of my border rocks and some other bits of tan bark. I think I've been able to identify one of the bits of tan bark in the photo to get a rough idea of the scale (yes, I've wandered outside in the dark and cold and a tape measure). I'm going to say looking at that that it was around 10-12 mm roughly. Seeing as I'm still getting things off my camera and the original 40 photos of the wasp are on that, I explored and none of them will allow me to get much idea of a size scale. This was with a 100 mm macro lens on the canon R5, so lots of pixels.
@SimoneC additionally, on another photo I had on the camera it had its wings a bit out from its body. The wings are darkish in colour, but are semi-see-through.
@SimoneC if one visits me again this year in Summer, I'll make sure to get a better size estimate. :-) I'm happy enough if you think that this just needs to be at a genus level.
Thanks Korinne, I think you probably are correct in your suggested ID, but I will leave it at the genus level at this stage. Could you include the image showing the wings out from the body?