10 Sqn - VC 10 Era, First Months
Whilst 10 Sqn did re-form initially at Fairford, as has been said, all flights with payloads had to be mounted from Lyneham till facilities at Brize - a building site then, as now - were able to cope with them from Spring 1967. Fortunately my time came later, but I understand that this involved a duty crew positioning the aircraft at Lyneham on the day prior to departure. Next day, the operating crew would convene, and brief and flightplan at Brize before being bussed over to Lyneham. On returns to Lyneham, if weather and serviceability allowed, the op crew would normally fly the aircraft back to Fairford.
This does not sound like fun - and I've also been told of a particularly unpopular slip used at that time: Brize - bus to Lyneham - direct to Bahrain/Muharraq - 2/3 hour turnround - to Akrotiri and slip. That schedule could almost involve two dawns in one duty day, and makes the Akrotiri Return of the mid-70s seem mild by comparison.
For alisoncc: Your December 1965 flight to Muharraq might have been on a British United VC 10 from Gatwick - they were certainly being used for MOD charter to Aden in 1966 when I went out there.