Fourth increase in two years will also apply to second class when new prices come into effect on 2 April
The cost of first and second-class stamps is to go up again next month, after Royal Mail announced price rises of 10p a letter.
The fourth increase in two years will take the price of a first-class stamp to £1.35 and the cost of the second-class service to 85p and will come into effect on 2 April.
