Blacksheep
A large number of the sorties were HS125's which were serviced by Civil Contractors. The Andovers flew larger parties and had a longer Crew Duty time - a 14 hour day as opposed to the 12 hours for the 125....and it wasn't Benbecula that was the cover name.
Oh -and I did 14 years on 32 Sqn flying those tasks to NI --- 274 of them!!