More than 100 supporters of Animal Rebellion stopped the supply of fresh milk across large areas of England in the early hours of Sunday, including Arla Aylesbury, which processes 10% of the UK supply.
It came after the activist group, who campaign for a sustainable plant-based food system, received no response to a letter to Downing Street in August, in which they warned of disruptive action in September unless progress towards their demands was made.