From what I remember, Silver Cloud was a series to include fairly obscure late WW2/ early jet age RAF/FAA aircraft that generally had, or would have had, a 'silver' finish in1/48.
I recall a Spiteful/Seafang and a Martin Baker MB5. There was an early jet, but it wasn't my taste so memory is cloudy.
They had the chunky buttery plastic of the BM kits and were a bit crude, but at the time there was nothing else on the subjects
S