G-EUDO, Mr C Eudo-Mitchell.
G-LOWC, Mr C Lowe
G-MGAR, Mr M Garrington
G-HALI, Mr A Henderson
There are others in the C registered aircraft as well
C-GSBN, Mr B Nesbitt
C-GSBA, Mr B Arsenault
Many of those G reg have become C reg machines, or VP reg machines.
Some of the very first CHC 139's were registered with the initials of the daughters of the employee who signed for them at the factory.