Royal Mail Stamp Prices March 2024. Royal mail stamps are set to increase within weeks as first class price rises 10p. First class stamp costs are rising again.
From 2 april 2024, the price of first class stamps will increase by 10p to £1.35 and. The price of a first class stamp has risen to £1.25 from £1.10, the third increase in the space of 18 months.