Small Parcel Size Packaging | Royal Mail Small Parcel Boxes & Mailers – Page 3

Packaging sized to the Royal Mail small parcel specification. Small parcel size packaging fits within Royal Mail's small parcel dimensions (up to 450 x 350 x 160mm, max 2kg) - the step up from large letter for products too thick or heavy to qualify for the lower rate, but still compact enough to avoid large parcel surcharges.

Browse related: Medium Parcel Sizes | Single Wall Cardboard Boxes | Mailing Bags

Wine Bottle Packing Boxes (75cl)

From £1.17

New

Zipper Document Bag (360 x 275 mm)

£2.58

~~£0.00~~

Find Out What Our Customers Are Viewing

More About "Small Parcel Size"

This collection covers over 60 products suited to a wide range of mailing and packaging applications. The range spans over 295 size options, a range of colour options, paper weights from 20–370gsm, gummed (lick-and-seal) and peel & seal closures.

Product types include: Anti Static Bags, Bag, Board Back Envelopes, Book Wrap Mailers, Business Envelopes, Cardboard Boxes.

Benefits

Size variety — over 295 size options across the range.
Colour options — a range of colour options available.
Closure choice — gummed (lick-and-seal) and peel & seal to suit different workflows.
Royal Mail compatible — qualifies as large letter or letter or medium parcel or small parcel within standard weight limits.

Frequently Asked Questions

What types of products are in this collection?
This collection contains over 60 products covering Anti Static Bags, Bag, Board Back Envelopes, Book Wrap Mailers, Business Envelopes, Cardboard Boxes. Use the sort and filter options to find the right product for your specific size, format and quantity requirements.

Are these products Royal Mail compatible?
Yes — products in this collection use standard UK postal formats compatible with Royal Mail's size and weight categories. Always check packed weight before assigning a postage rate.

Customer Feedback

What Our Customers Say

See why we’re trusted as by thousands of UK businesses for packaging and envelopes through our customer reviews.

Black and white photo of a person with long hair against a plain background

Envelope Printing Customer

Branded envelopes that felt event-ready

We needed branded envelopes for a client event and they looked exactly right. The team were helpful from start to finish and made sure everything moved quickly so we could meet our deadline. A really smooth experience for printed envelopes.

Woman with long brown hair wearing a beige top against a plain background

Envelope Customer

Quick fix after an order issue

My order arrived with a problem, but after I emailed the team I received a quick response and the issue was sorted straight away. It was handled professionally and made me feel confident about ordering again.

Man in a suit with a blurred green outdoor background

First Time Customer

Fast support when delivery went wrong

There was an issue with the courier delivering to my address, but the team dealt with it quickly and kept things moving. A replacement was arranged and the previous order was refunded without any fuss. It gave me a good first impression and I would order again.

Woman wearing a yellow sweater with a plain background

Wholesale+ Member

Reliable support for regular orders

The courier caused a problem, but Jess and Kelly were quick to help and did everything they could to sort it. They also looked at the products I order regularly and helped make future orders easier. Good value, good quality and service that feels genuinely useful.

Woman with gray hair wearing a blue top against a light gray background

Envelope Printing Customer

Easy custom printed envelope order

Ordering custom printed envelopes was straightforward from the start. James answered my questions clearly, the order arrived when expected and the finished envelopes were great quality. I would be happy to use the service again.

Man wearing a light gray sweater over a collared shirt on a plain background

Wholesale+ Member

Helpful and easy to deal with

A very straightforward company to buy from. The team were helpful, clear with communication and easy to deal with, which makes a big difference when ordering packaging regularly.

Man wearing a dark suit with a red tie against a plain background

Sample Customer

Helpful advice before ordering

The team helped point me towards the right product before I placed my order. It made the decision much easier and gave me confidence that I was choosing the right packaging for what I needed.

Man in a suit smiling outdoors with a blurred background

Packaging Customer

Useful support for flat pack cartons

Collection: Small Parcel Size