The Northampton-based brewer said it would be introducing a 2.3% increase from Oct 6.
T he company said it was facing a 50% rise in the price of malt, an increase of over 100%
for hops, and a jump in its utility bills.
It added: "We are committed to delivering efficiencies across all areas of business in order to absorb the increased costs and reduce the potential impact on our customers. This has been the case this year as our price increases have been significantly lower than our competitors.
"The rise in costs of such items as raw materials and utilities has been unprecedented, therefore on this occasion we have been left with no alternative.
"Customer support, brand growth and innovation remain at the heart of our strategy and we will continue with this support during this difficult trading period."