via the RSGB: Bar-coded stamps

From 31 July 2023, you should not apply non-barcoded stamps with Her late Majesty Queen Elizabeth II’s image to any mail.

In doing so the sender or recipient may have to pay a surcharge.

This news is highlighted to radio amateurs who use stamped-addressed QSL card envelopes.

Please ensure all stamped-addressed envelopes have valid barcoded stamps on them.

This only applies to stamps with Her late Majesty Queen Elizabeth II’s image on them and does not apply to stamps which have other pictures on them.

These can continue to be used.