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The widest range of protective case options from an independent UK supplier.

Market leading ESD safe packaging for any static sensitive products and components.

Huge range of options and impartial advice on genuinely sustainable packaging for your business.

Small Parcel Boxes

Custom design

Tailored to your requirements

UK trade supplier

Huge product selection

Reduce costs

Range of strategies and services

Small parcel boxes (PIP)

Royal Mail Small Parcel Boxes

Wholesale / trade supply of PIP cardboard boxes

If your business sends significant numbers of Royal Mail small parcel boxes – anything up to 450 x 350 x 160 mm – then sourcing these from GWP could improve quality, performance and costs.

Not only will your business benefit from having your small parcel boxes manufactured to a bespoke size / specification, but working with a manufacturer instead of buying off the shelf boxes you get cost effective (and tailored) pricing on mid to high volumes. Read More

Available Colours:

Brown Kraft cardboard material swatch
White cardboard material swatch
Cardboard with single colour print swatch
Full colour printed cardboard swatch
  • No obligation (and no pressure) quotes for any packaging
  • Free and impartial advice from UK based experts
  • Competitive pricing and full customisation options
FSC logo applied to Packaging manufactured by GWP (certificate FSC_C161914)

This product
can be
FSC® certified
on request


Detailed info on Small Parcel Boxes

If you are reading this, the likelihood is that your business needs packaging that complies with the PIP (pricing in proportion) guidelines as set out by the Royal Mail back in 2013. And more specifically, the small parcel box category, meaning your packaging cannot exceed a size of 450 x 350 x 160 mm (length x width x depth) or weight of 2Kg.

But have you stopped to consider that potentially having a smaller box (that still fits within these guidelines) could reduce your business’ costs? And improve transit protection?

Well, by having your small parcel boxes (and indeed any PIP packaging) manufactured bespoke by GWP Packaging, this is more than possible. Using a bespoke sized box for your products not only minimises material usage (and therefore costs), but also helps reduce any void fill you may require (again reducing your spend).

Bespoke Small Parcel Boxes

Custom sized postal packaging will also prevent / reduce movement of your goods inside the box, helping to improve protection too (and reduce the costs of returns / replacements too).

By manufacturing packaging to suit your product – rather than simply selecting the closest “stock” size, it also allows you control over the material used. This may be a lightweight, single flute material to maximise available space, or a heavier duty grade to add additional transit protection as required.

You can also choose from a range of different box styles – everything from an 0427 pizza style box to a simple 5 panel postal wrap – all of which will have specific benefits in terms of protection, presentation and ease of use. Whatever option you select, it will allow for easy assembly and storage (being supplied flat), helping aid the productivity of your packing team.

Add printing of logos, instructions or even full colour graphics to delight your customers, as well as choosing between white and kraft (brown) material, and you end up with postal packaging that not only protects your customers’ orders, but looks impressive too.

Key features of small parcel boxes at a glance

  • Adheres to the PIP small parcel size category (up to 450 x 350 x 160 mm)
  • Utilises a lightweight single wall material to maintain lightness and maximise space
  • Remains durable enough to protect contents during transit
  • Choice of easy assemble styles to suit your products
  • Supplied flat for ease of storage
  • White or kraft (brown) finishes to match your brand identity
  • Single colour logos to full colour print (inside or outside)


Small Parcel Box technical details

Please use the tables below for the important sizes / weights etc. for Royal Mail compatible Small Parcel boxes.

Max External Sizes

450 mm
350 mm
160 mm

Weights / Charges

1 Kg
2 Kg


Single Wall
Kraft / White

Tailored Pricing / Sizes

Genuinely cost effective packaging

Wondering why you are not able to see prices on this page? Or why you can choose custom sizes for a box that must adhere to a specific size?

Well, GWP Packaging is a manufacturer of corrugated packaging, rather than simply selling “off the shelf” boxes. What this means is that we can tailor the specification, sizing and – crucially – the pricing of your packaging to ensure it is exactly what you need, rather than you having to settle for the nearest available option.

As trade suppliers to businesses for over 25 years, you can also call on a team of experts to provide advice on the best option for your specific application, as well as no obligation, no pressure quotes on any packaging you need.

Customisation / Options

Striking print, enhanced properties and more

Looking to make your small parcel boxes stand out from your competitors? Or concerned about parcels getting wet or being tampered with when out with your couriers?

If so, there are a range of options available to enhance your PIP boxes. This includes anything from a single colour logo up to full colour print – on the inside or outside of the box – as well as specialist surface coatings and even built in tamper evident features.

Integral fittings

Integrated Fittings & Dividers

Improve protection & presentation

Tamper proof packaging

Tamper Evident Features

Prevent / highlight tampering in transit

Waterproof cardboard packaging

Water Resistant Coating

Protect your deliveries from rain and moisture

Printed small parcel boxes

1, 2 or Full Colour Printing

Add logos, graphics, instructions and more

Similar PIP Boxes

Similar options for your postal packaging

Large letter boxes

Large Letter Boxes

PiP Box colours

353 x 250 x 25mm
Max Size (L x W x D)

Medium parcel boxes

Medium Parcel Box

PiP Box colours

610 x 460 x 460mm
Max Size (L x W x D)

Pizza style boxes

Pizza Style Boxes

PiP Box colours

Custom Sizes
Enquire for details

Large parcel boxes

Large Parcel Boxes

PiP Box colours

> 610 x 460 x 460mm
External (L x W x D)

PIP boxes

View All PIP Boxes

Click here to see the full PIP boxes / packaging range

Postal packaging boxes and mailers

View All Postal Boxes

View all available postal packaging options

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    John Elliott GWP Packaging

    John Elliott

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    01793 754 444

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    Bill Chapman

    01793 754 444

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    Ian Heskins

    New Business Director
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    If Royal Mail Small Parcel Boxes are not exactly what you need, please check out the other PIP boxes available...