Thanks for your clarifying the dispatch a little.
Apart from Arthur Goddard. one of the engineers who qualified at Grenville's and was sent to the UK for further training was part of the SII development at Solihull, is still alive and well living in Sydney. Perhaps we need to assemble a set of questions on the early SII as 260 AC did with Arthur G and the 80".
The Brits are a little condescending to the Aussies in regard to vehicles here in Oz. Iain Reed's Misguided II and it's compatriot Misguided were originally British Army vehicles, and loaned to British Aerospace to demonstrate the Rapier missile system to the Oz Army. When we purchased the system the vehicles stayed in Australia with the Army. People on EMLRA are reluctant to accept that the vehicles are in Australia, including with the Oz Army service records for Misguided II because they have a disposal record from the Brit Army years after they were disposed of from the Oz Army.

