I live in the USA. I am ordering some tickets from London and I must provide the UK postage to the person who is mailing the tickets.
I have a Royal Mail "WorldWide" stamp good for up to 40 grams. It cost 97 pence at the time I purchased it (when I was in the UK a few years ago). The stamp does not list a monetary amount, though. Only says "WorldWide Up to 40 Grams."
I tried calling the Royal Mail, but my call did not go through.
Does anyone know if I can still use this stamp or if I need to purchase newer stamps.