I believe this one to be an Alvis-Straussler armored car MK I built by Manfried Weiss in Hungary in 1933.
This one had a "transportation" body of mild steel which I gather made it easier to ship it to the UK for trials.
There were several "Marks" and I believe this formed the basis for the Csaba armored car later found in the Hungarian Army.
Below, another photo of the car.
Bill