First class stamp price jumps to £1.25 - BBC News
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Royal Mail letter and parcel sizes for posting to UK mailboxes
First-class stamp prices to rise as Royal Mail fights higher costs | The Independent
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Norvic Philatelics Blog: UK Basic International Postage Rates to rise 1 September 2020 due to Covid-19.
Royal Mail Letter Sizes
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How to Mail a Letter: UK | PostSeal
Royal Mail Size Guide - Free Download
How much does it cost to mail a letter in the UK? - Quora
Royal Mail letter and parcel sizes for posting to UK mailboxes
UK Postage Rates | Royal Mail's New 2024 Postage Prices - PostGrid UK
Registered mail - Wikipedia
