What's this?

[Hanno Spoelstra]

I agree, it's a Humber Armoured Car. Could be a Mk 3?

A distinguising feature for the Fox is a much smaller shock absorber mount. The Fox also has a bulge on the left-front cheek of the turret.

Keith, could you please post the pictures of the CMP trucks on display there, including the armoured one?

Thanks,
Hanno