Since Rich likes these tail lights, here's a rear view of an early production 'Viewline'!
Although the header tank is on the nearside, this is actually the power steering reservoir, as this early version still has the flip-top radiator cap protruding through a flap at the top of the dummy radiator. This is the same type of cap as used on the post-1970 fuel tanks.
Power unit is a Gardner 6LXB. I wonder if it's for display somewhere, as it has chromed step rings on the front wheels. This photo was taken behind the factory, and the chimney in the background is at the top of London Road in Preston, with the Olympia Garage visible in the middle of the photo.