Radiorails
master brummie
The preceding pic (Post 66 gives the reason this vehicle and its crew were there.To compliment the above picture Swan Pub Yardley 1947 fire engine and personnel from Wash Lane Fire Station
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The vehicle in question is carrying the herald of the NFS (National Fire Service) which was a wartime organization and was replaced, in the 1947 Fire Services Act with city and country brigades in England & Wales (not sure about Scotland). I would hazard a guess that this vehicle was now retired from front line service being replaced by a newer vehicle.