Some of the operators mentioned operated schedules on behalf of British Airways World Cargo, these freighters had operated at Gatwick but moved to Stansted as the Gatwick passenger operation increased - "the Hub without the Hubbard." This was initially an Atlas Air 747-200F and DC-8s operated by Cargo Lion and MK Cargo, then dedicated 747-400F N495MC which was painted in Chelsea Rose, and expanded into Global Supply Systems than back to BA World Cargo with the 747-8F, now BA cargo is flown by Qatar Airways.
Likewise I think Martinairs MD-11 flights flew on behalf of Tampa Cargo out of South America and Miami with flowers and fresh produce back in the 1990's.
amc737