http://tinyurl.com/43aooan
So a 1st class postage stamp will now cost 46p, from today an increase of 5p per stamp.
I bet all these retailers are laughing all the way to the bank, because (if I have done my calculations correctly), If yesterday a retailer had bought a stock of stamps, he tends to make a good profit on them overnight.
Taking that if he bought only 50 books of 12 1st class stamps at yesterday prices, less 7% offered by the Royal Mail he stands to make £47.22 profit on them, if he sells them at today's prices.