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We ship at 3pm daily, Monday-Friday - with Next Day Mainland UK shipping as standard!

We ship at 3pm daily, Monday-Friday - with Next Day Mainland UK shipping as standard!

Next Working Day UK Shipping
Eco Friendly
Bulk Discounts on Stock Products
Rated 4.9/5 Stars on Reviews.io
Rated 4.9/5 Stars on Reviews.io

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Small Parcel Compliant Postal Boxes

Small Parcel Compliant Postal Boxes

We stock a range of UK made, recyclable hinged lid postal boxes and shipping outers which are Royal Mail Small Parcel Compliant (total weight must be less than 2kg). Eco-friendly packaging with same day despatch and UK next working day shipping when ordered by 3pm Monday-Friday. 

Small Parcel Compliant Postal Boxes

We stock a range of UK made, recyclable hinged lid postal boxes and shipping outers which are Royal Mail Small Parcel Compliant (total weight must be less than 2kg). Eco-friendly packaging with same day despatch and UK next working day shipping when ordered by 3pm Monday-Friday. 


Perfect Fit Royal Mail Small Parcel Boxes

Knowing the right box size for your small parcels isn’t just about fitting the product—it’s about avoiding unexpected postal surcharges. Our popular boxes fit snugly within Royal Mail’s 2kg small parcel limits, meaning you don’t pay extra for oversize packaging. That said, choosing a box that’s too tight can damage your goods during transit if there’s no room for padding, so balancing internal space with protection is key here.

Getting Protection Without Extra Weight

Small parcels often face rough handling; you might assume thicker cardboard always means better protection, but that adds unnecessary weight and cost. These boxes use carefully engineered single-wall corrugated board with a 350gsm kraft paper surface, offering solid rigidity without bulk. You can combine them with lightweight void fillers, like shredded paper or kraft chips, to cushion without tipping scales - mind you, avoid overstuffing as that can deform the box and cause issues through automated sorting machines.

Sizes That Actually Save Money

Royal Mail’s small parcel size restrictions give a max of maximum of 45cm long, 35cm wide, and 16cm deep, with a weight limit of 2kg, but going well under those helps avoid costly delays. Knowing your product dimensions before ordering really saves time and money here.

Easy Packing Tips for Small Postal Boxes

Fitting the item snugly is important but so is the actual packing technique. For small flat boxes, placing heavier items at the bottom and wrapping fragile elements in tissue paper or bubble wrap helps reduce movement. Tape seals should cover all opening edges—double taping across joins reduces the risk of the box bursting open mid-delivery. You’ll want to avoid overfilling as bulging sides cause sorting machine jams and possible damage. These boxes fold flat before use, so storing a few on hand doesn’t clutter up your workspace.

Related Options: Postal Tubes and Medium Parcel Boxes

If your products don’t quite fit typical small parcel dimensions or need a different format, check out our Kraft Postal Tubes for mailing rolled items like posters or documents safely. For slightly bigger shipments, our Medium Parcel Compliant Boxes range offers larger sizes balancing cost and protection. You might also be interested in Flat Brown Postal Boxes that work well for flat products, keeping weight low but sturdy for mail delivery.

For any questions on choosing the right small parcel boxes or pricing in bulk, give us a call on 01543 480163. Our team can help match your shipping needs to the best packaging solutions.

Award winning design

Our in-house design team are consistently recognised with industry awards for their packaging design excellence.