PhiCorp was a company that produced painkillers without narcotic side effects. In return for his protection, one of their representatives, Jilly Kitzinger, recruited Oswald Danes to speak in favour of allowing all drugs to be available without prescription. Rex Matheson theorised that this would increase their profit by onehundred fold.
Jack Harkness, Gwen Cooper and Rex infiltrated a Phicorp warehouse, where they discovered a massive stockpile of their drugs, leading them to believe the company had prior knowledge of Miracle Day. Jack commented it was "bigger on the inside." (TW: Dead of Night)