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Collection: Large Letter Size Envelopes

The envelope format that unlocks large letter postage rates. Large letter size envelopes are sized to fit within Royal Mail's large letter specification (up to 353 x 250mm, max 25mm depth) - allowing you to send thicker documents, multiple sheets and small flat items at the large letter rate rather than the higher small parcel rate.

Browse related: Large Letter Postal Boxes | Standard Letter Size | Letterbox Friendly Envelopes

177 products

Gold Metallic Finish Foil Envelopes - C6 - 114 x 162mm

Gold Metallic Finish Foil Envelopes

Regular price
Sale price From £0.21 Regular price £0.26
Gold Pearlescent Envelopes - Peel and Seal DL - 110 x 220mm
Eco Product

Gold Pearlescent Envelopes

Regular price From £0.11
Sale price Regular price
Golden Organza Bag - 300 x 200mm

Golden Organza Bag

Regular price
Sale price From £0.14 Regular price £0.16
Green Board Envelopes - 235 x 162mm
Eco Product

Green Board Envelopes

Regular price From £0.72
Sale price Regular price
Green Matt Finish Foil Envelopes - C6 - 114 x 162mm

Green Matt Finish Foil Envelopes

Regular price From £0.14
Sale price Regular price
Green Metallic Finish Foil Envelopes - C6 - 114 x 162mm

Green Metallic Finish Foil Envelopes

Regular price From £0.09
Sale price Regular price
Green String & Washer Envelopes - C6 - 162 x 114mm
Eco Product

Green String & Washer Envelopes

Regular price
Sale price From £0.66 Regular price £0.73
Holographic Gold Metallic Finish Foil Envelopes - Square - 165 x 165mm

Holographic Gold Metallic Finish Foil Envelopes

Regular price From £0.25
Sale price Regular price
Holographic Green Metallic Finish Foil Envelopes - Square - 220 x 220mm

Holographic Green Metallic Finish Foil Envelopes

Regular price From £0.25
Sale price Regular price
Holographic Red Metallic Finish Foil Envelopes - C5 - 229 x 162mm

Holographic Red Metallic Finish Foil Envelopes

Regular price From £0.25
Sale price Regular price
Hot Pink Metallic Finish Bubble Bag Mailers - C4 - 324 x 230mm

Hot Pink Metallic Finish Bubble Bag Mailers

Regular price From £0.88
Sale price Regular price
Ice Blue Matt Finish Bubble Bag Mailers - C5+ - 250 x 180mm

Ice Blue Matt Finish Bubble Bag Mailers

Regular price £0.64
Sale price Regular price
Ice Blue Matt Finish Foil Envelopes - C6 - 114 x 162mm

Ice Blue Matt Finish Foil Envelopes

Regular price From £0.21
Sale price Regular price
Ivory Coloured Peel and Seal Envelopes - C5 - 162 x 229mm
Eco Product

Ivory Coloured Peel and Seal Envelopes

Regular price From £0.21
Sale price Regular price
Ivory Wove Coloured Gummed Greeting Card V Flap Envelopes - 62 x 94mm

Ivory Wove Coloured Gummed Greeting Card V Flap Envelopes

Regular price
Sale price From £0.11 Regular price £0.22
Kraft Paper Food Bags - With Window 215 x 85mm
Eco Product

Kraft Paper Food Bags

Regular price From £0.21
Sale price Regular price
Lilac Matt Finish Bubble Bag Mailers - C5+ - 250 x 180mm

Lilac Matt Finish Bubble Bag Mailers

Regular price £0.41
Sale price Regular price
Lilac Matt Finish Foil Envelopes - C6 - 114 x 162mm

Lilac Matt Finish Foil Envelopes

Regular price From £0.21
Sale price Regular price
Lime Green Pearlescent Envelopes - Peel and Seal DL - 110 x 220mm
Eco Product

Lime Green Pearlescent Envelopes

Regular price From £0.12
Sale price Regular price
Magnolia Coloured Peel and Seal Envelopes - C4 - 324 x 229mm

Magnolia Coloured Peel and Seal Envelopes

Regular price
Sale price From £0.20 Regular price £0.31
Manila 90gsm Business Envelopes - C4 - 229 x 324mm

Manila 90gsm Business Envelopes

Regular price
Sale price From £0.08 Regular price £0.18
Manila Board Back Envelopes - Yes Without Window 190 x 140mm

Manila Board Back Envelopes

Regular price
Sale price From £0.14 Regular price £0.16
Manila Coloured Peel and Seal Envelopes - 120gsm C5 - 229 x 162mm

Manila Coloured Peel and Seal Envelopes

Regular price
Sale price From £0.14 Regular price £0.17
Manila Eco Friendly Bubble Bag Mailers - 470 x 350mm
Eco Product

Manila Eco Friendly Bubble Bag Mailers

Regular price
Sale price From £0.17 Regular price £0.25
Load video: ECO Manilla Padded Envelopes

Manila Eco Padded Mailers

Regular price From £0.40
Sale price Regular price
Manila Economy Board Back Envelopes - C5 - 229 x 162mm

Manila Economy Board Back Envelopes

Regular price From £0.16
Sale price Regular price
Manila Gummed Business Envelopes - Wallet 80gsm C6 - 114 x 162mm
Eco Product

Manila Gummed Business Envelopes

Regular price From £0.07
Sale price Regular price
Manila Kraft 90gsm Padded Mailer - 215 x 120mm
Eco Product

Manila Kraft 90gsm Padded Mailer

Regular price From £0.19
Sale price Regular price
Manila Paper Finish Bubble Bag Mailers - 165 x 100mm
Eco Product

Manila Paper Finish Bubble Bag Mailers

Regular price
Sale price From £0.14 Regular price £0.16

More About "Large Letter Size Envelopes"

This collection covers over 175 products suited to a wide range of mailing and packaging applications. The range spans over 305 size options, a range of colour options, paper weights from 20–350gsm, gummed (lick-and-seal) and peel & seal closures.

Product types include: Amazon FBA, Anti Static Bags, Bag, Biodegradable Bags, Board Back Envelopes, Book Wrap Mailers.

Benefits

  • Size variety — over 305 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 small parcel within standard weight limits.

Frequently Asked Questions

What types of products are in this collection?
This collection contains over 175 products covering Amazon FBA, Anti Static Bags, Bag, Biodegradable Bags, Board Back Envelopes, Book Wrap Mailers. 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.

Trustpilot Verified

What Our Customers Say

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

Read more reviews at Trustpilot

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

Aimée Thompson

We ordered some branded envelopes for a client event and they were a perfect addition. Jess and the team were extremely accommodating and attentive throughout the ordering process, pushing our order through to meet the tight deadline. I really recommend this company for branded materials. Thank you team!

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

Charlotte Goodman-Brooks

Great Customer Service

Unfortunately my order arrived damaged but after emailing the issue over to the company I received a quick response from Jess who was able to fix the problem in minutes, thanks so much jess, fantastic customer service, will definitely be ordering from this company again.

Man in a suit with a blurred green outdoor background

SR

Great Products, Quick Delivery

DPD were having issues delivering to my address and things were getting frustrating, but the company really stepped up. They sorted the problems with DPD quickly, the replacement arrived super fast, and they refunded my previous order without any hassle. Overall, I’m really impressed – amazing customer service, and I’ll definitely be ordering again!

Woman wearing a yellow sweater with a plain background

Grace

Proactive and Helpful

The courier let us down, but Jess and Kelly were hugely helpful and did everything they could to resolve it. They even arranged to specially stock products I order regularly to make future orders smoother. Great quality, good value and excellent customer service, with the phone answered on the first ring!

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

Rebecca R

Really Easy Process

Really easy process to order some custom printed envelopes, James was so helpful and answered all my questions. The envelopes arrived on time and are really great quality, wouldn't hesitate to use this company again!

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

Bernie Webber

Great Company To Buy From

Great company to buy from. Very helpful and communicative.


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

Paul Craig

Prompt and Efficient Service

Very helpful staff directing me to exactly the right item needed.

Man in a suit smiling outdoors with a blurred background

Richard

Fantastic Customer Service

Fantastic Customer Service

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