Did the Comet 1 in the first shot have any identifying markings when operating in SAA service ? Maybe not if they were rotated with the rest of the BOAC fleet onto SAA's runs. It was one, G-ALYY, operating for SAA as SA201 (but often mis-described as a BOAC service) that was the final Comet 1 crash that ended the type's service.
How were they crewed ? BOAC flight deck and SAA cabin crew ?