One of the most useful things to know about UK shipping labels is that nearly every courier uses the same 100 × 150mm format, so a single 4x6 thermal printer covers them all. There are a few exceptions and layout differences worth knowing, but the standardisation is why one roll of labels serves your entire dispatch.
The 100 × 150mm standard
The overwhelming majority of UK courier labels, Royal Mail, DPD, Evri, UPS, Yodel and more, are generated at 100 × 150mm, or 4x6 inches. This standardisation is deliberate: it lets sellers run one printer and one label stock regardless of which carrier a parcel goes with. Our courier requirements guide covers the practicalities.
Royal Mail and Click & Drop
Royal Mail labels through Click & Drop are standard 100 × 150mm, designed to print on a 4x6 thermal printer. International orders add a CN22 or CN23 customs form alongside, but the shipping label itself stays at the standard size.
Evri, DPD and Yodel
Evri, DPD and Yodel all use the 100 × 150mm format for their standard parcel labels, so the same printer and stock handles all three. The layouts differ slightly in where the barcode and address sit, but the physical size is identical.
UPS and international carriers
UPS also standardises on the 4x6 format for its parcel labels, and this holds across most international carriers too. For sellers exporting regularly, the same 100 × 150mm thermal setup that works domestically works internationally.
The occasional A4 or multi-label exception
A few edge cases use A4 or include additional documents: some pallet or freight labels, certain customs paperwork, and some marketplace-specific returns labels. But these are the exception, and they're usually printed separately on a standard office printer rather than replacing the 4x6 thermal label.
Why the standard size matters
The standardisation means your label stock and printer never have to change when you switch carriers. That's a real operational advantage, and it's why the 4x6 direct thermal printer is the universal tool of UK dispatch, handling every carrier without reformatting.
Printing every carrier correctly
The one thing that varies isn't the size but the print settings: set the paper size to 100 × 150mm, print each carrier's PDF at 100% scale, and scan-test. The same discipline that makes DPD and Evri labels scan applies to all of them.
Frequently asked questions
Do all UK couriers use the same label size? Almost all use the 100 × 150mm, or 4x6 inch, format, including Royal Mail, DPD, Evri, UPS and Yodel.
Can one printer handle every courier? Yes, a single 4x6 thermal printer and one roll of labels covers all the major UK couriers.
Are there couriers that use a different label size? A few edge cases like pallet or freight shipments use A4, but standard parcel labels are almost universally 100 × 150mm.
The one label that covers every courier
Our 100 × 150mm direct thermal labels print Royal Mail, DPD, Evri, UPS and Yodel barcodes from a single roll, no per-carrier stock.
Shop 4×6 Labels