Royal Mail announced today that the price of 1st and 2nd class stamps would rise on April 4.

1st class will rise 5p to 46p, the biggest-ever rise, while 2nd class will rise 4p to 36p.

Large Letters will also be affect: 1st Large will rise 9p to 75p while 2nd Large goes up 7p to 58p.

Parcels up to 2kg are unaffected, but those above 2kg will increase by 8%.

Special Delivery will rise from £5.05 to £5.45 for the basic service.

Royal Mail's press release on the subject is here.