Richard,
The original book makes lots of small errors in designation: 'Lark 5' for example, for LARC-V (Lighter Amphibious Resupply Cargo-Five) and the use of M113 when they actually mean M113A1. And, as Dianna has observed, many minor trials are not covered at all: FC Land Rovers, early Unimog, J5 Bombadier tractor, to mention just a few.
But as a primary source reference, it is a pretty good start. It is certainly a far better source of information than Margaret Kaczmarek's 'A History: Army Engineering Capability 1939 to 2000' which is just full of 'howlers', for example (and one of my favourites...):
'...The Champ was tested but never used by the Australian Army, which favoured the Landrover'. Hmmmm....
The FV1119 and the Saladin HAC were both on trial by arrangement with the British Ministry of Supply, and were the primary reason that the 1960-61 trials were conducted. The Saladin was, by that stage (1960/61 trials season) already in service with the Australian Army, so the trials were only of passing interest value to Australia (the crew commander was Peter Badman, later to be the OC, C Sqn when they deployed to SVN in 1968). The wrecker was never a contender for Aust service as far as I can ascertain, but doubtless the trials confirmed this (too big/heavy/complicated....)! The M543 was 'trialed' during the 62-63 season, but by then was already on order anyway.
The opportunity was also taken to trial three vehicles for the Australian Army: Land Rover Ambulance (2nd/improved Prototype), Land Rover fitted for Wireless, and the S61. These were trials that were distinct from the UK trials, and were separately staffed and administered (no doubt as much for accounting purposes, as the Poms were paying for the trials of the UK vehicles).
The S61 Bombadier Muskeg was an interesting one, one of several flirtations the Aust Army had with Bombadier tracked vehicles of various sizes during the 1960s. (CAUTION: shameless self-promotional plug to follow...) My article on the little J5 and T6 trailer experiments will be featured in the next edition of Military Machines International.
Three other vehicle types were also included in the mix of vehicles used, and these were reported on, but not under test as such: a Holden FC Station Sedan used as the OCs vehicle, a Truck, Semi-Trailer, Inter, 'experimental', and three Truck, Cargo, 2 1/2 ton (Aust) No.1 - two No.1 Mk.1, and one No.1 Mk.2. One of these was used as the overland transporter of the S61.
Mike C