Postal Boxes UK – Custom Cardboard Postal Packaging Solutions

Name: Postal Boxes
Brand: WH Skinner

Tired of damaged packages, disappointed customers, and postal boxes that cost more than your products? Stop losing money on cheap packaging that fails when it matters most.

We design and manufacture top quality custom postal boxes in the UK for products to be sent by post which suit the contents of your parcel.

Start an order Call us 01622 749099

Protective Bottle Box For Glass Bottles With Handles

Custom Printed Letterbox Boxes With Inserts For Cosmetics

Letterbox Box Postal Packaging Subscribtion Popcorn

Protective Postal Packaging With Optional Buffers

“Excellent service on every level and went the extra mile. Would highly recommend. Claire was particularly brilliant. Thanks guys” – Katy Newnham

Premium Postal Boxes for All Your Shipping Needs

Types of Postal Boxes We Offer

0427 Box With Custom Inserts For Test Tubes

Protective Postal Boxes

Flexible Packaging for Posting Boxes

PRO60456 Glass Bottle Presentation-Box Protective Packaging

Mailing Boxes for Glass Bottles

Custom Letterbox Packaging

Postal Boxes for Magazine Subscriptions and Comic Books

Brown Board Postal Boxes

Choose a Fefco Style Printed Box

Fefco 0421 Printed Boxes

Fefco 0427 Printed Boxes

Fefco 0426 Printed Boxes

What size boxes are available?

Small Postal Boxes (Letter Size)

Small postal boxes designed for letter-size or “letterbox-friendly” dimensions are a popular packaging choice for sending smaller items securely and efficiently via standard mail services such as Royal Mail in the UK.

Medium Postal Boxes (Small Parcel)

Medium postal boxes, classified as “Small Parcel” by Royal Mail, are essential packaging solutions for sending bulkier or multi-item shipments securely within the UK. These boxes strike a balance between size, protection, and postage efficiency.

Large Postal Boxes (Standard Parcel)

Large postal boxes—often referred to as “Standard Parcel” or “Large Parcel”—are used for sending items that exceed the maximum limits for small and medium parcels via the Royal Mail or Parcelforce network.

Have you started prepping for 2025 retail events?
Upcoming Dates:

Back to School – August

Make sure you’re ready to shine! Our products are custom-designed and made with care, so make sure to get in contact as early as possible to discuss your vision and allow time for planning and production. Start planning Christmas now!

Keep an eye out for upcoming dates to help you keep on top of your retail calendar.

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Cardboard Options

Side 1: Brown Test
Side 2: Brown Test

Side 1: Brown Kraft
Side 2: Brown Test

Side 1: White
Side 2: Brown Test

Side 1: Coated White
Side 2: Brown Test

Side 1: White
Side 2: White

Side 1: Coated White
Side 2: White

Side 1: Coated White
Side 2: Coated White

1.5mm Single Wall (E)

2.5mm Single Wall (B)

3mm Double Wall (EE)

4mm Single Wall (C)

4.5mm Double Wall (EB)

7.5mm Double Wall (BC)

Light

Medium

Heavy

Very Heavy

No print

Flexographic (sustainable water based inks)

Screen

Digital

Lithographic Laminate

No additional finish

Spot Gloss Varnish

Flood Gloss Varnish

Gloss Laminate

Matt Laminate

Moisture Resistant Coating

Standard Delivery Paperwork

Under Plain Cover

Assembly Instructions

FSC Mix Certification

Basic

With Individual Outers

Collated, Individual Packing

Self Assembly

Part Assembly

Full Assembly

Fulfilment

Direct Despatch

N.B. Not all options are available for all applications, quantities or board thicknesses. Please talk to us for more information. All our products are manufactured in the UK from recycled cardboard sourced in the UK or EU.

Why Choose Our Postal Boxes?

Postal box designs should protect the enclosed items from damage. We help you carefully choose the correct boxes to not only help your brand reputation but reduce your business costs in terms of assembly, packing time, postage costs and costly breakages.

Our eco-friendly range includes large postal boxes, simple postal boxes, protective packaging for glass bottles, and some more unusual options like postal poxes for magazine subscriptions.

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Eco-Friendly Postal Box Solutions

Printed Postal Boxes

Our extensive range of production equipment at our business in Maidstone, Kent means we are set up for short to long production runs of printed postal boxes. As you can see we offer FEFCO box styles for your printed postal boxes plus different design options plus more subtle options like a Brown Board Postal Box. We are able to print digitally for shorter runs, screen for medium runs – litho or flexo printing are more economical printing options for longer runs.

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Custom Postal Box Design & Printing

Designing your custom printed mailing boxes to fit the maximum allowable sizes for Royal Mail’s standards will mean you have maximum flexibility with the minimum postal cost. Make sure your custom boxes conform to Royal Mail sizes (opens in a new tab). Choose from different type of Mailing box, for example, a large postal box, protective postal box or a postal box with flexible packaging.

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Glass Bottle Presentation Box Protective Packaging

Large Postal Boxes

Larger items call for larger postal boxes and our range of machinery gives us the flexibility to produce very large boxes, if required. Large postal boxes sometimes need to be strong, and our design team are experts in producing big and strong boxes. We have a lot of experience in this area.

Even if the large postal box contents are lightweight, you may need to consider stacking strength and how the box will be treated in transit. These are all standard areas of consideration during the estimation, design and sampling process.

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Letterbox Postal Boxes

Our letterbox friendly packaging is designed to fit through postal boxes and letterboxes in the UK. We offer customised designs – we make boxes suitable for your product first and foremost. If fitting within a predetermined size (i.e. Royal Mail’s large letter limit) is a priority for you, please just let us know before we design your packaging!

Our letterbox-friendly packaging solution is meticulously crafted to glide through postal boxes and letterboxes.

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Frequently Asked Questions About Postal Boxes

We offer high quality postal boxes from small letterbox sizes (100x75x25mm) up to large parcel boxes (350x250x160mm). All sizes are Royal Mail compliant and available in brown kraft or white cardboard.

Yes, all our postal boxes meet Royal Mail size requirements. We offer small letter, large letter, small parcel and medium parcel compliant sizes.

Ours is more of a minimum order value. The custom printed postal boxes you order from us should have a minimum order value of £750. Depending on your requirements, we can discuss this when we produce a quote for you.

Yes, we offer full-color custom printing on postal boxes. This includes your logo, branding, and custom designs to enhance your postal packaging. We also have a design team to help guide you through realising the vision you have for your brand.

All our postal boxes are made from 100% recyclable FSC certified cardboard. They’re environmentally friendly and support sustainable shipping practices.

Postal boxes are specifically designed to meet Royal Mail size and weight requirements, often with features like easy assembly and tear strips for convenient opening.

Print Options for your Postal Boxes

Flexo printing is the perfect medium for printing postal boxes. It’s quick and cost effective, with a full range of colours available. It’s possible to get great coverage of ink and a surprising amount of detail in the flexo printing process.

Our Flexo Printed Postal Boxes combine the strength and durability of traditional postal boxes with the vibrant, eye-catching impact of flexographic printing. We utilise state-of-the-art flexo printing technology to elevate the presentation of your shipments, making them stand out in a crowded market and leaving a lasting impression on the recipients.

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Order Process and Stages of Production including UK wide Delivery

Stage 1 – An order for a sample or production quantity is confirmed
Stage 2 – After we receive payment, and usually product sample(s), we begin work on the intial design
Stage 3 – Photos of the first-cut prototype sent for feedback or approval
Stage 4 – Any minor design modifications required are implemented, then the physical sample is sent for approval
Stage 5 – Once the physical sample is approved (payment is made for the production quantity, if it’s still outstanding), we can release the net template for the artwork to be laid up along with our instructions for supplying print-ready artwork.
Stage 6 – As our client, you supply the print-ready artwork files for us to review and proof
Stage 7 – We send a PDF proof for approval to print.
Stage 8 – Once approval to print is confirmed, we proceed to production. If a printed sample is required before proceeding to production we can provide this for an additional cost, but it would take a few days to schedule.
Stage 9 – We’ve reached Despatch point. Orders are typically sent flat-packed and palletised to your chosen location on an overnight delivery to UK mainland (please enquire for other delivery destinations).

Single Wall and Double Wall Flutes

Corrugated cardboard is a sustainable and recyclable material which is both lightweight and extremely strong. Depending on the thickness of the corrugations and finish of the liner board, corrugated card can be elegant, strong, and long lasting.

This cardboard can be used for boxes and displays but also furniture, exhibitions, games and art.

E flute is mainly used for inner containers, presentation boxes and smaller countertop displays.

Double wall cardboard such as EE or EB is used where box strength is important, or for free standing displays and dump bins.

Single wall cardboard such as B or C flute is generally reserved for economical outer boxes and cartons. BC flute is used for more demanding applications.

All the benefits of corrugated cardboard but with the added convenience of rigidity in sheet form. This material is ideal for use in cardboard furniture, exhibition and semi-permanent displays. It can also be used as packing material for fragile items.

Display board is a solid board without corrugations and is generally used for high-end displays, and in places where curves are desired such as elliptical towers or round displays.

It is often used as a cladding material, where the strength and rigidity of a display will come from the cardboard components inside. Display board offers excellent print finish and a long-lasting high quality surface.

Ideal for use where cardboard is not suitable, UV-stable Correx can be used outdoors, in wet weather conditions, can be washed clean, and can be printed as usual. Commonly used for displays in garden centres and DIY stores.

Extremely light weight and very rigid, foam board is ideal for hanging display boards. It has a very smooth surface for high print quality.

Foamex is a solid plastic sheet material which has excellent longevity. Frequently this material is used for outdoor signage and has a good appearance once printed. Occasionally, Foamex is used for indoor displays where complex and detailed cut-outs reduce the strength of cardboard i.e. standees.

Predominantly, transparent polypropylene sheeting is used for producing mop trays, which are waterproof trays to fit around the base of a cardboard display.

Once fitted, the floor can be mopped as usual without the need to move the display to a dry area.

Last Modified:

August 21, 2025