The complete set of 12 new barcoded stamps, with three stamps each for England, Scotland, Wales and Northern Ireland.
Each stamp includes a unique barcode printed in matching colour alongside the main body of the stamp with a simulated perforation line.
The technology signifies a major leap in service flexibility for Royal Mail.
Four First Class stamps, four Second Class stamps and four Â£1.85 stamps.
England First Class Crowned Lion of England
England Second Class Three Lions of England
England Â£1.85 English Oak
Scotland First Class Lion of Scotland
Scotland Second Class Saltire
Scotland Â£1.85 Thistle
Wales First Class Dragon
Wales Second Class Leek
Wales Â£1.85 Daffodil
Northern Ireland First Class Patchwork of Fields
Northern Ireland Second Class Giantâ€™s Causeway
Northern Ireland Â£1.85 Linen Slip Case
39mm x 30mm
Cartor Security Printers
15 x 14.5
Bars as appropriate