The fast food giant's is offering ‘buy one get one free' on a range of burgers including its Angus, Whopper and Bacon Double Cheeseburger.
In a bid to attract families where its arch rival McDonald's is traditionally stronger, it is also offering free kids meals with an adult meal.
Consumers can also take advantage of a number of Burger King morning offerings such as a free drink and hash browns with any breakfast butty purchased.
The initiative, which is flagged up on burgerking.co.uk, is the latest in a long line of aggressive voucher promotions by the chain and the first for the new year.
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