The information if have is that Onofrio Piacquadio and George Piacquadio, traded as Pogi and were registered at 37 Balfe St, Kings Cross, London N1.
I don’t have much information on either of them other than Onofrio married in 1974 in St. Pancras, London to Ms. Maria L Pozzuto. They had a daughter, Silvana, who was born in December 1975, but it looks as though Onofrio died in December 1976.
Note: Unconfirmed. There is a Giorgio Piacquadio that married in March 1961 to a Ms. Maria Puzzuto??
The Pogi collection can be found here