1979 Cadburys Dairy Milk feat Cilla Black
In 1824, John Cadbury began selling tea, coffee, and drinking chocolate, which he produced himself, at Bull Street in Birmingham, England. John Cadbury later moved into the production of a variety of Cocoas and Drinking Chocolates being manufactured from a factory in Bridge Street, supplying mainly to the wealthy due to the high cost of manufacture at this time. During this time a partnership was struck between John Cadbury and his brother Benjamin. At this time the company was known as ‘Cadbury Brothers of Birmingham’.
The two brothers opened an office in London and in 1854 received the Royal Warrant as manufacturers of chocolate and cocoa to Queen Victoria. Around this time in the 1850s the industry received a much needed boost with the reduction in high import taxes on cocoa; this allowed chocolate to become more affordable to everyone.
Info gleaned from Wikipedia
Cadbury Milk Tray is a selection of milk chocolates with various fillings produced in the United Kingdom by Cadbury UK. Launched by the Cadbury company in 1915, it is one of the longest running brands in the confectioner’s portfolio.
The name ‘Tray’ derived from the way in which the original assortment was delivered to the shops. Originally Milk Tray was packed in five and a half pound boxes, arranged on trays from which it was sold loose to customers.
In 1916 a half pound deep-lidded box was introduced with a purple background and gold script, which has undergone minor changes in the ninety years since it was introduced. In 1924 a one-pound box was introduced, and by the mid 1930s the Cadbury’s Milk Tray assortment was outselling all its competitors.