I might be able to help you on this subject. I was the flight test engineer for Elliots who supplied the VC10 (and 1-11) Automatic Flight Control System, as such I was based firstly at Weybridge constructing the “Iron Bird”, (early fixed base simulator!) and then at Wisley, responsible for the development and certification program and flew several hundred hours on for the VC10.
Although Jock Bryce was CTP and did the first flight with Brian Trubshaw, (and also the first flight of the 1-11), his long standing back injury from an earlier ejection from a Valiant finally caught up with him, and Trubshaw became CTP towards the end of ’63.
The first flight crew on G-ARTA on 29th June 1962 were:
Jock Bryce-Captain
Brian Trubshaw – Co-pilot
Bill Cairns - Flight engineer (note; Bill was also a test pilot on the VC10)
Roy Holland – Chief Flight Test Observer
Chris Mullen – Observer (later became chief flight test observer VC10)
Ian Muir – Senior Flight Test Observer
This link is to an article which Jock Bryce wrote pior to the first flight.
G-ARTA's first flight
Other test pilots included Eddie McNamara, Bill Cairns, Lou Roberts, John Cochrane,
Peter Baker, and Hayley-Bell.
Other Flight Test observers were Peter Dirs, Stan Fincham Bob Bishop, Arthur Fuller, Brian Ganmmon and several more whose names I sadly cannot remember. Apart from Roy Mole as a Flight Engineer, also I remember George Wood navigator.
Specialist technical staff included Mike Bailey and others.
We had Peter Cane and Dexter Field BOAC project pilots flying with us on many occasions.
The ARB certification flying was done by (initially) David Davis, but mostly by Gordon Corps, who went on to become CTP for Airbus.
All in all, a great team and a great aeroplane.
Ps I have a feeling that Roy Mole was the flt engineer on G-ARTA when the hinge bracket on one of the (four) elevators sheared during a stall programme. We all listened to the audio tape when they got back, and very exciting it was too.
Hope this helps