Ross,
many thanks for that, clearly you are very familiar with making sense of RAF service records.
I'm going to take a little time to digest what you have written but would you mind me coming back to you should I have further questions?
I'm wondering if it is possible from the units mentioned in north Africa to infer a little more about where my grandfather went and what he did.
Would my assumption that he served as part of a small wireless observation unit reporting enemy movements back to HQ fit with the entries on his service record?
Also this may seem an odd question, but my grandfather was always a lover of nature and wildlife but he had a life long atypical hatred of camels; something which can only have come form intense personal experience. The only photographs we have of him in recognisably British RAF uniform may date from before the war. Those photos of his we can be sure of being from wartime show what were presumably his colleagues/friends in tropical uniform, along with additional tourist type snaps of Egypt. However those images that actually include my grandfather show him either in swimming trunks at the beach or in Bedouin style desert robes.
Does it in anyway seem plausible to you that my grandfather's service record supports the notion that he might have spent time roaming the desert dressed as Arab, possibly working with camels?