In June 1905 in Birmingham, England, Cadbury made its first Dairy Milk bar, with a higher proportion of milk than previous chocolate bars, and it became the company’s best-selling product by 1914. George Cadbury Junior, responsible for the development of the bar, has said “All sorts of names were suggested: Highland Milk, Jersey and Dairy Maid. But when a customer’s daughter suggested Dairy Milk, the name stuck.” Fruit and Nut was introduced as part of the Dairy Milk line in 1926, soon followed by Whole Nut in 1930. By this point, Cadbury’s was the brand leader in the United Kingdom. In 1928, Cadbury’s introduced the “glass and a half” slogan to accompany the Dairy Milk bar, to advertise the bar’s higher milk content.
(1986-1992) the Irish Dairy Milk wrapper was separate to Great Britain but since 1993 identical wrappers worldwide.
In September 2012, Cadbury made the decision to change the shape of the bar chunks to a more circular shape in order to reduce the weight. The bar had not seen such a significant change in shape since 1905.
Since 2007 Cadbury had a trademark in the United Kingdom for the distinctive purple colour (Pantone 2865C) of its chocolate bar wrappers, originally introduced in 1914 as a tribute to Queen Victoria. In October 2013, however, an appeal by Nestlé succeeded in overturning that court ruling.
In July 2018, Cadbury announced it would launch a new Dairy Milk version with 30% less sugar. The chief nutritionist of Public Health England, Dr Alison Tedstone, said she was “pleased that Mondelez is the latest … name” to offer “healthier” products.