Price of first class stamps to rise to 95p Royal Mail says letter deliveries are continuing to decline, but operating costs are going up. Royal Mail announces price rises on first and second class stamps amid shake-upThe price of a first class stamp is going up by 10p and a second class stamp by 2p, as the Post Office u-turns on plans that meant Brits had less than a year to use up their old stamps First-class stamps will cost almost £1 as letter use fallsThe price of a first-class stamp is to rise by 10p to nearly a pound, the Royal Mail has announced.They will cost 95p from April 4. It will mean their price has Royal Mail ramps up price of first-class stamp by 10p to 95pDeclining letter volumes and rising costs blamed for double-digit increase from 4 April