Hi Hanno,
I know a little of the history of the Quad at the Firepower museum. It came to the Royal Artillery museum at the Rotunda in Woolwich from the Muckleburgh museum and was reputed to be an ex-garage breakdown truck. This was borne out by the top of the rear body being cut away for the crane. The engine was a Bedford 28hp, which I distinctly remember having a Vauxhall Motors rebuild plate for the 1950's on the block. It went to the REME Workshops at Colchester as an apprentice project to restore. For a reason that I do not remember, it was later sideloaded to the REME Workshops at Ashford for apprentices to once again work on it. Somehow it ended it up in my section of the Workshops and I had to supervise an apprentice doing some of the work on it. The restoration was done with materials available and not to the greatest detail, the curator at the time was just happy to have it running and to closely represent its original appearance. There was no budget to go out and procure correct parts. I seem to think before it came to us it had 11.00-20 runflat tyres fitted and it gave a very hard ride.
To sum up, it could have gone from Duxford to Muckleburgh originally.
I am sending you a PM regarding this.
regards, Richard