According to this cinema advertising slide a glass of wine is perfect with every meal! Specialist stores like the 'Wine Cellar' flourished until 1989. That was the year supermarkets could stock wine on their shelves. Beer followed a decade later.
According to a 1981 edition of 'The Chronicle', the Wine Cellar moved into it's building in 1974 after extensions provided the space. Another report shows it still there in 1983.
By the 1970s having hand coloured (or dyed) cinema slides was becoming less common. Instead, actual colour photographic transparencies were being sandwiched between two sheets of glass.