I remember one evening about 2000 ish, we were being loaded for a UPS flight to CGN (Channex A300). Parked next to us was an Ethopian IL76. The Service air ramp supervisor told us that the captain had locked the cockpit door and was demanding to be taken to Tesco before they departed.
We left, but the following evening we heard that the Ethopian captain had his wish and came back from a 24hour Tesco with 3 taxis full of stuff.