British army trucks of the 30s. Identification

[Konstantin Chernov]

A test run through the hills of North Wales in 1936. This was an event where car manufacturers presented their vehicles to military representatives. Pictured is a Leyland Retriever. The quality of the picture is not very good and I could be wrong, but it looks like the front wheel has eight mounting points. Also missing are the parking lights in a separate housing like on other Retriever trucks. Was this a serial production Retriever? Or was it a one-off experimental example?