Royal Mail's 2026 Large Letter specifications have specific size, weight, and thickness limits that directly affect shipping costs. A packaging supply specialist breaks down the critical dimensions small businesses need to know to avoid parcel-rate surcharges. To learn more, visit https://www.globepackaging.co.uk/learning/royal-mail-large-letter-boxes-sizes-weight-limits-cost
Hey everyone, welcome back to the show! Today we're tracking a change that directly impacts your company's bottom line—Royal Mail's updated Large Letter specifications for 2026. Joining us is a packaging supply specialist to break down the logistics. Let's start with the basics: what are the core size and weight requirements this year?
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