1947:
Burton,Griffiths & Co Ltd
Burton Griffiths SH-10 Gear Cutting Machine
Rec. Num. 13 of 14
Source: Aircraft Production July 1947
1951:
Festival Of Britain National Air Races
Festival Of Britain National Air Races Hatfield - June 23rd 1951
Rec. Num. 14 of 14
Source: Flight June 15th 1951