Global Supply Systems. Based at Stansted, they operate 3 B744 freighters on an ACMI (Aircraft, Crew, Maintenance and Insurance provided) contract for BA world cargo. They are 51% owned by John Porter, a UK entrepreneur and 49% owned by Atlas flying on a UK AOC. The aircraft are leased from Atlas. It was formed in response to the UKs Government's objection to Atlas' long term contract to fly for BA world cargo.