The second outlet in pictures 2 & 3 is made by RELYON USA and is rated at 15A 125V & 10A 250V:





Pictures 4 & 5 show two different styles of outlets, I'm assuming the first ones are similar to the British 5 amp sockets, these ones are a SECURA brand made in Australia with a cataclogue number 17 on the back. The second ones are CLIPSAL brand sockets, the one on the left is marked 5 AMP 240 VOLT & the one on the right is marked 10 AMP 240 VOLT. The regestered design number on the back is the same (10246):





Picture 6 will be familiar to some, the plugs are marked with a brand name that looks like 2 diamonds side-by-side with an "S" in the centre of each of the diamonds with 250V stamped above & looks like 650W below. The adaptor is a three way 2 pin device with the same markings and the ratings are 125V 15A & 250V 10 A:



Picture 7 is a socket that will fit into an American pattern faceplate to allow an Australian pattern socket to fit:

That would be Smith And Stone.

They certainly look like British 5A types. There was even a make which had the same circular recess the same diameter as the pin spacing -- Can't remember what brand it was at the moment.