see picture 22810 for a similar design though the Surrey example was a SS chassis. This looks like a DS series to me. Some of the N Yorkshire machines were bodied by HCB Angus. Full list is at picture 17828.
I've just seen this today. Still parked in the same place, but looking slightly worse for wear.
Added by Michael G. on 19 September 2014.
Interesting Michael to hear its still in the same place. Its a shame to see this appliance end its days like this after giving years of service. Thank you for the update.
Ex North Yorkshire
Started at York 1991 , then to Skipton then became a reserve ET in 1997, unsure of when it was disposed of.
Added by Graham Mitchell on 26 February 2012.