Austin LD 150.

Austin LD 150, 884 DAA, was a Hampshire County Council Ambulance Service vehicle. The vehicle was eventually retired from voluntary service (SAES) late 1972. It was purchased by a scrap dealer who operated under the name of 'Skippy', who ran a junk shop (Skippers) in Osborne Road Southsea, just along from the Queens Hotel.
The vehicle was last seen circa 1975 parked in Clarence Parade.
This picture looks to have been taken in the car park of St Mary's Hospital, Portsmouth.
Thanks to Ron Lilly for the photo and information.