It is a 1935 two-ton Ford BB Box Van with the registration plate BUC 852 and appeared in Dad's Army from 1969 to 1977; it was also seen in the 2016 film based on the series.
In the same episode, the van is shown with covered holes built into the side panels, so that the platoon can fire their rifles through them.
It was discovered in a dilapidated condition in Streatham in London by Frank Holland, an assistant property master for the BBC.
Holland contacted Fred Wilmington, whose company supplied vehicles to the BBC; he purchased the van and restored it to full working order.
Later Paul Joel, a designer working on Dad's Army, spotted the van among Wilmington's stock of vehicles and obtained it for use in the series.
A different van was used for the 1971 Dad's Army film, namely a closed cab Ford Model AA with a box roof added so that the platoon could stand inside it.
[3] In 2012 the van was auctioned by Bonhams, when it was sold to the Dad's Army Museum in Thetford for £63,100 including the buyer's premium.