Unite the union says it has secured a two-year pay deal worth up to 17.5 per cent for more than 1,000 Cadbury workers, including those at the Chirk factory.

The union has also delivered a separate 25 per cent boost in holiday pay.

Unite's members at Cadbury's sites in Bournville in Birmingham, Chirk, and Marlbrook in Herefordshire recorded an 80 per cent vote in favour of the deal, which over two years, inclusive of bonuses, is worth up to 17.5 per cent to the workers.

Unite general secretary Sharon Graham said: "Where employers can clearly afford to raise pay, we are determined to ensure that they do.

"Yet again Unite's focus on improving jobs, pay and conditions is getting results for our members.

"This deal was delivered by the hard work and dedication of Unite's representatives at Cadbury and the support of Unite members."

Unite national officer for food and drink, Joe Clarke, said: "Unite negotiated this deal over three months with Cadbury and it sets the standard for the rest of the food manufacturing sector, which is performing very strongly.

"Unite will be negotiating with other food manufacturing companies in the coming months and we will be bargaining for our members in those workplaces to also receive rises that take into consideration the rising cost of living and high profits of their employers."