Eric B Morgan's book 'Vickers Valiant' gives potted histories of all the aircraft. This is what it says for WP213:
6.7.55 138 Squadron, Gaydon and Wittering.
29.5.57 199 Squadron, Honington, an electronic countermeasures unit.
16.12.58 18 Squadron, Honington, formed from C Flight 199 Squadron.
18.4.63 19 Maintenance Unit St Athan
23.4.63 non effective
6.4.65 sold for scrap
My father flew with 7 Squadron and went to Embakasi, Nairobi in May 1959. They flew via Idris in Libya, then Embakasi where they stayed for two days. The return was via El Adem in Libya, Marham (for customs presumably), then Honington (home of 7 Squadron then).
I got this information from 7 Squadron's Operations Record Books held at The National Archives, Kew. These are on microfilm. They would be the most accurate source of information, giving crew names, take off times and some basic information on the purpose of the sortie. The one mentioned above was not noted as a Lone Ranger, but it may have been. As well as the five crew, it's more than likely that the crew chief would also have been on the flight. Of course to find the info more readily you would need a squadron, an approximate date, and a pilot's name would also help.
You might get some idea of the Squadron by looking at the tail plane of course.