Wet summer could force rise in bread price All is not lost. If we have some hot dry weather for the crops to grow we will have a good harvest," he said. Bakers are already facing increased costs. The price of wheat in the Britain has risen from £180 a tonne in the spring to around £256 a tonne today due to global shortages. Although bakers have so far held back from passing this rise on to shoppers, further bad news on the harvest will force them to raise prices to supermarkets.