Is this stamp valid for a small letter? : r/royalmail

Royal Mail warns there are only 100 days left to use stamps without barcodes, Royal Mail

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Royal Mail warns old stamps must make the last collection on Monday July 31 to avoid charges

Royal Mail demonetising all non-barcode Machin (+ other) stamps - Page 26 - STAMPBOARDS - Postage Stamp Chat Board and Stamp Forum

Is this an official letter? : r/royalmail

Commonwealth Stamps Opinion: 230 Why Don't Bureaux Use Their Own Stamps?

Trimming Shop Shipping Mail PiP Template Postal Large & Small Letter Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, 2 Size Measurement, White : Office Products

Royal mail stamps hi-res stock photography and images - Alamy

Stamp barcoded royal mail hi-res stock photography and images - Alamy

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Royal Mail