I recall when we used to fly back on leave from Kano by BOAC we used to stop at Tripoli in Libya. I think that might have been Argonauts because my Junior Jet Club Log book shows the Stratocruiser and Britannias went through Rome and I recall Barcelona on another trip when I was 9. We came back on Elder Dempsters "Aureol" when we left Nigeria.
Apologies for the slight thread drift, it's always nice to wallow in a bit of nostalgia for an area and time that does not come up very often!!
It sounds like Crewsair though as they gained a lucrative contract in April 1952 to fly servicemen and their families from the UK to West Africa. The contract covered 80 flights over a period of 12 months and the first Viking departed on 20 April 1952 with usually 1/2 flights a week thereafter. The flights staged through Gibraltar and after gaining the contract Crewsair moved from Southend to Blackbushe. (This is from Anthony Merton Jones British Independent Airlines since 1946)
A very interesting thread.