Hello
I thought i'd post this on, its a reprint of an article from our local paper in 1964, featuring the 1964 Denby Dale Pie procession, with 2 ferrets from the Royal Dragoon Guards, one can be seen as 00DD18.
I'm assuming the pie is being towed by that traction engine in the rear of the photo. Looks like the ferret made a better shot :-)
http://www.denbydale.com/content/denby_dale_pie/
I was there in 1988 for the ninth pie.. Alas, I didn't see any armoured cars, but I did eat a rather large portion of Record Breaking Pie