The price of a loaf is expected to go up about 5p this week after British Bakeries increased the wholesale price of all its bread and bakery snack products by 7%.
The company, which makes Hovis, Mothers Pride and Nimble, said the price rise followed a 12% increase in the cost of flour early in January.
A spokesman said: “Shop prices are likely to rise by a similar amount, typically five pence on a loaf of Hovis.”
The company blamed the price hikes on soaring cereal prices driven by poor harvests, declining world stocks and rising freight rates.