N50GD Hawker Siddeley HS-125-600A Gould Inc. Houston - William P Hobby (HOU / KHOU), USA - Texas Ken Haynes Collection - 30/06/1975
N500GD Hawker Siddeley HS-125-600A Gould Inc. Hatfield (HTF/ EGTH), UK - England Ken Haynes - 17/07/1974
