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Plain Envelopes

Plain envelopes can be bought from us in a variety of colours such as white and manilla, as well as multiple sizes like C4, C5 and DL.

Plain Envelopes
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New Guardian Strong Pocket Envelope Peel & Seal 130gsm DL Manilla (500 Pack)

New Guardian Strong Pocket Envelope Peel Seal 130gsm DL Manilla 500 Pack 103498 F
500
Pack
  • 500 Premium Envelopes: Pack contains 500 manilla envelopes
  • Strong and Durable: Built to withstand tough postal handling
  • Secure Peel and Seal: Reliable closure for a professional finish
  • DL Size: Ideal for standard letters and documents
This item is out of stock

New Guardian Strong Pocket Envelope Peel & Seal 130gsm DL Manilla (500 Pack)

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Q-Connect Envelope Pocket Self Seal 135gsm C3 Manilla (125 Pack)

Q Connect Envelope Pocket Self Seal 135gsm C3 Manilla 125 Pack 461803 F
125
Pack
  • Size: 458 x 324mm – Ideal for larger items.
  • Quantity: Pack of 125 manilla envelopes.
  • Material & Weight: Durable 135gsm manilla paper.
  • Convenient: Features a quick self-seal pocket closure & 75% recycled content.
This item is out of stock

Q-Connect Envelope Pocket Self Seal 135gsm C3 Manilla (125 Pack)

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Q-Connect Padded 50mm Gusset Envelope Peel & Seal 140gsm C4 White (100 Pack)

Q Connect Padded 50mm Gusset Envelope Peel Seal 140gsm C4 White 100 Pack 181328 F
100
Pack
  • Durable Protection: Robust 3-layer construction resists damage during mailing.
  • C4 Size & 100-Pack: Includes 100 white C4 (324 x 229 x 50mm) envelopes.
  • Expanding Gusset & Easy Closure: Features a 50mm gusset for bulkier items and a convenient peel and seal closure.
This item is out of stock

Q-Connect Padded 50mm Gusset Envelope Peel & Seal 140gsm C4 White (100 Pack)

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5 Star Office Envelope Recycled Pocket Self Seal 115gsm C3 Manilla (125 Pack)

5 Star Office Envelope Recycled Pocket Self Seal 115gsm C3 Manilla 125 Pack 477454 F
125
Pack
  • Size: 457x324mm
  • Quantity: 125 envelopes per pack
  • Closure: Features a convenient self-seal closure
  • Material: Made with 100% recycled materials
This item is out of stock

5 Star Office Envelope Recycled Pocket Self Seal 115gsm C3 Manilla (125 Pack)

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Plus Fabric Envelope Self Seal 120gsm C5 White (250 Pack)

Plus Fabric Envelope Self Seal 120gsm C5 White 250 Pack 154917 F
250
Pack
  • Pack of 250 self-seal C5 envelopes
  • Suitable for A5 & folded A4 documents
  • Made from durable 120gsm bright white paper
  • Self-seal closure saves time & effort
This item is out of stock

Plus Fabric Envelope Self Seal 120gsm C5 White (250 Pack)

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Plus Fabric Envelope Pocket Self Seal 120gsm C4 White (250 Pack)

Plus Fabric Envelope Pocket Self Seal 120gsm C4 White 250 Pack 118558 F
250
Pack
  • Size: C4 – fits standard A4 sheets.
  • Closure: Self-seal for quick & easy use.
  • Quantity: 250 envelopes per pack.
  • Security: White exterior, opaque blue interior for confidentiality.
This item is out of stock

Plus Fabric Envelope Pocket Self Seal 120gsm C4 White (250 Pack)

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Value Kraft Mailing Bag 100mm Gusset 100gsm 580x465mm Manilla (50 Pack)

Value Kraft Mailing Bag 100mm Gusset 100gsm 580x465mm Manilla 50 Pack 786652 F
50
Pack
  • Dimensions: 580x465x100mm with a 100mm lip.
  • UK Made: Manufactured in the UK.
  • Convenient: Features twin peel and seal strips for easy returns.
This item is out of stock

Value Kraft Mailing Bag 100mm Gusset 100gsm 580x465mm Manilla (50 Pack)

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Blake Wallet Envelope Peel & Seal 130gsm C5 Metallic Gold (250 Pack)

Blake Wallet Envelope Peel Seal 130gsm C5 Metallic Gold 250 Pack 453105 F
250
Pack
  • Pack Size: 250 Metallic Gold envelopes.
  • Paper Weight: Crafted from high-quality 130gsm paper.
  • Envelope Size: C5 – fits A4 folded or A5 unfolded.
  • Closure Type: Convenient Peel and Seal for easy mailing.
This item is out of stock

Blake Wallet Envelope Peel & Seal 130gsm C5 Metallic Gold (250 Pack)

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Blake Wallet Envelope Peel & Seal 120gsm C5 Yellow (250 Pack)

Blake Wallet Envelope Peel Seal 120gsm C5 Yellow 250 Pack 453097 F
250
Pack
  • Colour: Bright Banana Yellow – makes mail stand out.
  • Size: C5 – fits A4 folded or A5 unfolded.
  • Closure: Peel and seal for quick dispatch.
  • Pack Size: 250 envelopes per pack.
This item is out of stock

Blake Wallet Envelope Peel & Seal 120gsm C5 Yellow (250 Pack)

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5 Star Office Envelope Wallet Self Seal 80gsm DL White (50 Pack)

5 Star Office Envelope Wallet Self Seal 80gsm DL White 50 Pack 409091 F
50
Pack
  • Pack Size: 50 high-quality self-seal envelopes
  • Size: DL (220x110mm)
  • Opening Style: Wallet opening for easy access
  • Paper Weight: 80gsm
This item is out of stock

5 Star Office Envelope Wallet Self Seal 80gsm DL White (50 Pack)

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5 Star Eco Envelope Recycled Pocket Self Seal 90gsm C5 White (500 Pack)

5 Star Eco Envelope Recycled Pocket Self Seal 90gsm C5 White 500 Pack 463262 F
500
Pack
  • Convenient: Features a self-seal closure – no licking needed!
  • Size: C5 (229 x 162mm)
  • Quantity: Pack of 500 envelopes
This item is out of stock

5 Star Eco Envelope Recycled Pocket Self Seal 90gsm C5 White (500 Pack)

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Q-Connect Gusset Envelope 140gsm B4 Manilla (125 Pack)

Q Connect Gusset Envelope 140gsm B4 Manilla 125 Pack 766962 F
125
Pack
  • Holds bulky items with a 25mm expanding gusset.
  • Pack of 125 B4 manilla envelopes.
  • Durable 140gsm paper for reliable protection.
  • Features a strong peel and seal closure for security.
This item is out of stock

Q-Connect Gusset Envelope 140gsm B4 Manilla (125 Pack)

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Plain Envelopes

Find plain envelopes for your mailing and office requirements. Our extensive range includes a variety of sizes, including DL, C4, C5 and B4. Peel and seal and self seal options are also available.

We stock bulk packs to suit businesses and home offices, as well as a wide range of quantities. Choose from different paper weights and colours like white and manilla.

We have the right envelope for your letters, documents and invoices. Envelopes with recycled paper are also available here.

Find more types of envelopes in our full range.

Frequently Asked Questions

Q. Will C5 envelopes fit A4 paper?

Q. What is a windowless envelope?