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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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We found 40 products
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Cartridge People Self Seal Envelope 120gsm C4 White (250 Pack)

Cartridge People Self Seal Envelope 120gsm C4 White 250 Pack 47123 CP
250
Pack
  • Suitable for A4 paper and A3 folded in half
  • Secure self-seal fastening
  • White, 120gsm paper
  • Pack of 250
£19.99
£16.66 ex. VAT
£16.66
£19.99 inc. VAT
£19.99
£16.66 ex. VAT
£16.66
£19.99 inc. VAT

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Order now for dispatch tomorrow

Cartridge People Gummed Envelope 120gsm C4 White (250 Pack)

Cartridge People Gummed Envelope 120gsm C4 White 250 Pack 47122 CP
250
Pack
  • Suitable for A4 paper and A3 folded in half
  • Secure gummed fastening
  • White, 120gsm paper
  • Pack of 250
£16.99
£14.16 ex. VAT
£14.16
£16.99 inc. VAT
£16.99
£14.16 ex. VAT
£14.16
£16.99 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 80gsm C4 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 80gsm C4 Manilla 250 Pack 139796 F
250
Pack
  • Contains 250 manilla envelopes
  • Ideal for A4 documents
  • Features an easy-seal, secure flap
  • Made with 85% recycled content
£18.10
£15.08 ex. VAT
£15.08
£18.10 inc. VAT
(1)
£18.10
£15.08 ex. VAT
£15.08
£18.10 inc. VAT
(1)

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Order now for dispatch tomorrow

Value Envelope Manilla Self Seal 80gsm C4 Manilla (250 Pack)

Value Envelope Manilla Self Seal 80gsm C4 Manilla 250 Pack 102795 F
250
Pack
  • C4 Size: Suitable for standard business correspondence and unfolded A4 documents.
  • Self-Seal: Features a convenient self-adhesive flap for quick, easy closure – no moisture needed.
  • Durable Quality: Crafted from high-quality 80gsm paper for a professional finish.
  • Large Pack: Contains 250 envelopes – ideal for both home and business use.
£18.58
£15.48 ex. VAT
£15.48
£18.58 inc. VAT
£18.58
£15.48 ex. VAT
£15.48
£18.58 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 90gsm C4 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 90gsm C4 Manilla 250 Pack 126348 F
250
Pack
  • Size: C4 - Ideal for A4 documents.
  • Quantity: 250 envelopes per pack.
  • Material: Made from 85% recycled manilla.
  • Closure: Features a convenient self-seal flap.
£19.54
£16.28 ex. VAT
£16.28
£19.54 inc. VAT
£19.54
£16.28 ex. VAT
£16.28
£19.54 inc. VAT

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Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 115gsm C5 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 115gsm C5 Manilla 250 Pack 106513 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Paper Weight: Durable 115gsm paper
  • Size: C5, fits A4 folded or A5 unfolded
  • Closure: Convenient self-seal for secure mailing
£14.14
£11.78 ex. VAT
£11.78
£14.14 inc. VAT
£14.14
£11.78 ex. VAT
£11.78
£14.14 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 115gsm C4 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 115gsm C4 Manilla 250 Pack 160611 F
250
Pack
  • Suitable for A4 documents
  • Pack of 250 manilla envelopes
  • Made with 85% recycled manilla
  • Heavyweight 115gsm paper with self-seal closure
£20.33
£16.94 ex. VAT
£16.94
£20.33 inc. VAT
£20.33
£16.94 ex. VAT
£16.94
£20.33 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Value Envelope Manilla Self Seal 115gsm C4 Manilla (250 Pack)

Value Envelope Manilla Self Seal 115gsm C4 Manilla 250 Pack 224100 F
250
Pack

  • Pack of 250 C4 Manilla Self Seal Envelopes

  • Fits unfolded A4 documents

  • Made from 115gsm heavyweight paper for a professional finish

  • Quick & easy self-adhesive flap for secure sealing

£22.54
£18.78 ex. VAT
£18.78
£22.54 inc. VAT
£22.54
£18.78 ex. VAT
£18.78
£22.54 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Wallet Self Seal 80gsm DL White (250 Pack)

Q Connect Envelope Wallet Self Seal 80gsm DL White 250 Pack 610338 F
250
Pack
  • Size: DL - Fits standard A4/A5 folded documents.
  • 250 Pack: Large quantity for frequent use.
  • 80gsm White Paper: Professional quality and finish.
  • Self-Seal Closure: Secure, tamper-evident & saves time.
£9.34
£7.78 ex. VAT
£7.78
£9.34 inc. VAT
£9.34
£7.78 ex. VAT
£7.78
£9.34 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Value Envelope Pocket Self Seal 90gsm C4 Manilla (250 Pack)

5 Star Value Envelope Pocket Self Seal 90gsm C4 Manilla 250 Pack 889367 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Closure Type: Self-seal for convenience
  • Envelope Size: C4
  • Opening: Pocket access on the shorter side
£20.62
£17.18 ex. VAT
£17.18
£20.62 inc. VAT
£20.62
£17.18 ex. VAT
£17.18
£20.62 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Gummed 80gsm C4 Manilla (250 Pack)

Q Connect Envelope Pocket Gummed 80gsm C4 Manilla 250 Pack 112123 F
250
Pack
  • Suitable for A4 documents
  • Pack of 250 manilla envelopes
  • Reliable gummed flap for secure closure
  • C4 size - ideal for standard posting
£17.62
£14.68 ex. VAT
£14.68
£17.62 inc. VAT
£17.62
£14.68 ex. VAT
£14.68
£17.62 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelope Pocket Self Seal 115gsm C4 Manilla (250 Pack)

5 Star Office Envelope Pocket Self Seal 115gsm C4 Manilla 250 Pack 130612 F
250
Pack
  • Pack Size: 250 C4 (324x229mm) envelopes
  • Convenient Closure: Features a reliable self-seal for easy use.
  • Paper Weight: Made from durable 115gsm paper.
£20.51
£17.09 ex. VAT
£17.09
£20.51 inc. VAT
£20.51
£17.09 ex. VAT
£17.09
£20.51 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Envelope Pocket 130gsm C5 Manilla (250 Pack)

New Guardian Envelope Pocket 130gsm C5 Manilla 250 Pack 101292 F
250
Pack
  • Size: C5
  • Paper Weight: 130gsm
  • Closure: Power-Tac peel and seal with tear strip
  • Pack Quantity: 250 envelopes
£44.02
£36.68 ex. VAT
£36.68
£44.02 inc. VAT
£44.02
£36.68 ex. VAT
£36.68
£44.02 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Basildon Bond Pocket Envelope 120gsm C4 White (250 Pack)

Basildon Bond Pocket Envelope 120gsm C4 White 250 Pack 106610 F
250
Pack

  • Pack of 250 plain white C4 envelopes

  • Suitable for A4 documents & standard business correspondence

  • Made from 120gsm 100% recycled paper

  • Features a peel and seal closure & opaque green interior

£51.63
£43.03 ex. VAT
£43.03
£51.63 inc. VAT
£51.63
£43.03 ex. VAT
£43.03
£51.63 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Envelope Peel & Seal 130gsm C4 Manilla (250 Pack)

New Guardian Envelope Peel Seal 130gsm C4 Manilla 250 Pack 111291 F
250
Pack
  • Pack of 250: Contains 250 durable manilla envelopes
  • C4 Size: Designed for unfolded A4 sheets
  • 130gsm Paper: Offers exceptional strength and quality
  • Peel and Seal with Tear Strip: Ensures secure dispatch and easy opening
£72.61
£60.51 ex. VAT
£60.51
£72.61 inc. VAT
£72.61
£60.51 ex. VAT
£60.51
£72.61 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 115gsm 381mm x 254mm Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 115gsm 381mm x 254mm Manilla 250 Pack 151596 F
250
Pack
  • Size: 381 x 254mm
  • Paper Weight: 115gsm for reliable protection
  • Convenient: Self-seal closure for quick use
£26.98
£22.48 ex. VAT
£22.48
£26.98 inc. VAT
£26.98
£22.48 ex. VAT
£22.48
£26.98 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelope Recycled Pocket Peel & Seal 115gsm 381mm x 254mm Manilla (250 Pack)

5 Star Office Envelope Recycled Pocket Peel Seal 115gsm 381mm x 254mm Manilla 250 Pack 115858 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Convenient Closure: Peel and seal for easy use
  • Pocket Opening: Access contents from the shorter side
£30.34
£25.28 ex. VAT
£25.28
£30.34 inc. VAT
£30.34
£25.28 ex. VAT
£25.28
£30.34 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 115gsm 406mm x 305mm Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 115gsm 406mm x 305mm Manilla 250 Pack 156398 F
250
Pack
  • Size: 406 x 305mm
  • Paper Weight: 115gsm for reliable protection
  • Closure: Convenient self-seal for quick use
  • Pack: 250 manilla envelopes, 75% recycled
£31.90
£26.58 ex. VAT
£26.58
£31.90 inc. VAT
£31.90
£26.58 ex. VAT
£26.58
£31.90 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

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

Plus Fabric Envelope Pocket Peel Seal 120gsm C4 White 250 Pack 122101 F
250
Pack
  • Size: C4 – fits A4 sheets
  • Material: Robust 120gsm paper for durability
  • Security: Opaque blue interior & secure peel and seal closure
  • Quantity: Pack of 250 envelopes
£137.70
£114.75 ex. VAT
£114.75
£137.70 inc. VAT
£137.70
£114.75 ex. VAT
£114.75
£137.70 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelope Pocket Self Seal 90gsm C4 Manilla (250 Pack)

5 Star Office Envelope Pocket Self Seal 90gsm C4 Manilla 250 Pack 105620 F
250
Pack
  • Pack Size: 250 C4 (324x229mm) manilla envelopes
  • Convenient Closure: Features a reliable self-seal for quick fastening
  • Paper Quality: Made from 90gsm paper with 100% recycled materials
  • Easy Access: Pocket opening along the shorter side for simple content retrieval
£28.60
£23.83 ex. VAT
£23.83
£28.60 inc. VAT
£28.60
£23.83 ex. VAT
£23.83
£28.60 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 90gsm B4 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 90gsm B4 Manilla 250 Pack 130378 F
250
Pack
  • Size: 353 x 250mm (B4)
  • Quantity: Pack of 250 envelopes
  • Paper Weight: 90gsm
  • Closure: Self-seal adhesive flap
£28.47
£23.73 ex. VAT
£23.73
£28.47 inc. VAT
£28.47
£23.73 ex. VAT
£23.73
£28.47 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Evolve Envelope Recycled Pocket Self Seal 100gsm C4 White (250 Pack)

Evolve Envelope Recycled Pocket Self Seal 100gsm C4 White 250 Pack 181440 F
250
Pack
  • Made from 100% recycled 100gsm paper.
  • Size & Format: C4 size, designed for A4 documents.
  • Convenient Closure: Features a quick and easy self-seal closure.
  • Pack Quantity: Includes 250 white envelopes per pack.
£36.34
£30.28 ex. VAT
£30.28
£36.34 inc. VAT
£36.34
£30.28 ex. VAT
£30.28
£36.34 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla (250 Pack)

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla 250 Pack 139227 F
250
Pack
  • Pack Size: 250 envelopes
  • Envelope Size: C5
  • Paper Weight: 130gsm for durability
  • Closure Type: Self-seal for easy & secure use
£38.70
£32.25 ex. VAT
£32.25
£38.70 inc. VAT
£38.70
£32.25 ex. VAT
£32.25
£38.70 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 80gsm C4 Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 80gsm C4 Manilla 250 Pack 154378 F
250
Pack
  • Contains 250 manilla C4 envelopes
  • Self-seal closure for convenience
  • Suitable for A4 documents
  • Durable 80gsm paper
£27.22
£22.68 ex. VAT
£22.68
£27.22 inc. VAT
£27.22
£22.68 ex. VAT
£22.68
£27.22 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 100gsm 406mm x 305mm Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 100gsm 406mm x 305mm Manilla 250 Pack 195478 F
250
Pack
  • Size: 406x305mm - Ideal for A4 documents.
  • Self-Seal: Quick and easy closure – no licking needed!
  • Durable: Made from quality 100gsm paper for reliable protection.
  • Pack of 250: Perfect for businesses and home organisation.
£49.60
£41.33 ex. VAT
£41.33
£49.60 inc. VAT
£49.60
£41.33 ex. VAT
£41.33
£49.60 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

New Guardian Envelope Self Seal 130gsm C4 Manilla (250 Pack)

New Guardian Envelope Self Seal 130gsm C4 Manilla 250 Pack 104882 F
250
Pack
  • Size: C4 - Perfectly sized for A4 sheets.
  • Paper Weight: 130gsm - Durable and reliable protection.
  • Closure: Self-Seal – Quick and convenient for secure mailing.
  • Quantity: Pack of 250 – Ideal for office and home use.
£56.24
£46.87 ex. VAT
£46.87
£56.24 inc. VAT
£56.24
£46.87 ex. VAT
£46.87
£56.24 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 100gsm B4 White (250 Pack)

Q Connect Envelope Pocket Self Seal 100gsm B4 White 250 Pack 101758 F
250
Pack
  • B4 Size: 353 x 250mm
  • 100gsm Paper Weight for quality feel
  • Convenient Self-Seal Closure
  • Pack of 250 White Envelopes
£50.37
£41.98 ex. VAT
£41.98
£50.37 inc. VAT
£50.37
£41.98 ex. VAT
£41.98
£50.37 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Bong E-Green 50mm Gusset Peel & Seal Mailer 120gsm C4 Manilla (250 Pack)

Bong E Green 50mm Gusset Peel Seal Mailer 120gsm C4 Manilla 250 Pack 611751 F
250
Pack
  • Durable & Waterproof: Crafted from 120gsm Kraft paper for reliable protection.
  • Generous Gusset: Features a 50mm gusset for thicker contents.
  • Convenient Closure: Easy-peel and seal with a tamper-evident seal & return strip.
  • Pack of 250: Ideal for mailing catalogues, reports, and brochures.
£88.18
£73.48 ex. VAT
£73.48
£88.18 inc. VAT
£88.18
£73.48 ex. VAT
£73.48
£88.18 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Bong E-Green 40mm Gusset Peel & Seal Mailer 210gsm C5 Manilla (250 Pack)

Bong E Green 40mm Gusset Peel Seal Mailer 210gsm C5 Manilla 250 Pack 611750 F
250
Pack
  • Pack of 250: Ideal for bulk mailing needs.
  • 40mm Gusset: Provides extra space for thicker items.
  • Waterproof & Durable: Made from 120gsm Kraft paper.
  • Peel & Seal Closure: Includes a tamper-evident seal and return strip.
£66.49
£55.41 ex. VAT
£55.41
£66.49 inc. VAT
£66.49
£55.41 ex. VAT
£55.41
£66.49 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

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

Blake Wallet Envelope Peel Seal 120gsm C5 Red 250 Pack 453098 F
250
Pack
  • Vibrant Red C5 Envelopes: Make your mail stand out.
  • Quality 120gsm Paper: Professional finish & reliable protection.
  • Peel & Seal Closure: Secure and easy to use.
  • Bulk Pack of 250: Ideal for businesses & frequent use.
£54.67
£45.56 ex. VAT
£45.56
£54.67 inc. VAT
£54.67
£45.56 ex. VAT
£45.56
£54.67 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelope Recycled Pocket Self Seal 115gsm 406mm x 305mm Manilla (250 Pack)

5 Star Office Envelope Recycled Pocket Self Seal 115gsm 406mm x 305mm Manilla 250 Pack 123891 F
250
Pack
  • Pack of 250: Contains 250 high-quality manilla envelopes.
  • Self-Seal Closure: Features a reliable self-seal for convenience.
  • Recycled Material: Made with 100% recycled materials for sustainability.
  • Size: 406 x 305mm: Ideal for standard documents and office use.
£46.56
£38.80 ex. VAT
£38.80
£46.56 inc. VAT
£46.56
£38.80 ex. VAT
£38.80
£46.56 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

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

Plus Fabric Envelope Wallet Self Seal 120gsm DL White 250 Pack 121652 F
250
Pack
  • Secure & Professional: Ideal for confidential correspondence.
  • Durable 120gsm Paper: Offers reliable protection for documents.
  • Convenient Self-Seal Closure: No moisture adhesive needed.
  • Fits A5/A4 Sheets: Accommodates folded documents easily.
£33.90
£28.25 ex. VAT
£28.25
£33.90 inc. VAT
£33.90
£28.25 ex. VAT
£28.25
£33.90 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

5 Star Office Envelope Recycled Pocket Self Seal 90gsm 406mm x 305mm Manilla (250 Pack)

5 Star Office Envelope Recycled Pocket Self Seal 90gsm 406mm x 305mm Manilla 250 Pack 112936 F
250
Pack
  • Pack of 250: Contains a generous 250 high-quality manilla envelopes
  • Self-Seal Closure: Features a reliable self-seal for quick and easy use
  • Recycled Material: Made with 100% recycled materials for a sustainable choice
  • Size: Measures 406 x 305mm, suitable for standard documents
£46.56
£38.80 ex. VAT
£38.80
£46.56 inc. VAT
£46.56
£38.80 ex. VAT
£38.80
£46.56 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

CTS Envelope Plain Non Window 80gsm C4 Manilla (250 Pack)

CTS Envelope Plain Non Window 80gsm C4 Manilla 250 Pack 809031 F
250
Pack
  • Pack of 250: Contains a generous supply of high-quality C4 manilla envelopes.
  • Self-Seal Closure: Features a convenient adhesive flap for easy, no-lick sealing.
  • A4 Compatible: Comfortably fits unfolded A4 paper (324x229mm size).
  • Durable 80gsm Paper: Offers reliable protection during mailing and transit.
£14.62
£12.18 ex. VAT
£12.18
£14.62 inc. VAT
£14.62
£12.18 ex. VAT
£12.18
£14.62 inc. VAT

Order now for dispatch tomorrow

Order now for dispatch tomorrow

Q-Connect Envelope Pocket Self Seal 90gsm 381mm x 254mm Manilla (250 Pack)

Q Connect Envelope Pocket Self Seal 90gsm 381mm x 254mm Manilla 250 Pack 109849 F
250
Pack
  • Size: 381 x 254mm
  • Paper Weight: 90gsm for reliable performance
  • Closure: Convenient self-seal for secure mailing
This item is out of stock

Q-Connect Envelope Pocket Self Seal 90gsm 381mm x 254mm Manilla (250 Pack)

Please enter your email address below and we will contact you as soon as this item becomes available. Your email will not be used for anything else.

5 Star Office Envelope Recycled Pocket Self Seal 90gsm 381mm x 254mm Manilla (250 Pack)

5 Star Office Envelope Recycled Pocket Self Seal 90gsm 381mm x 254mm Manilla 250 Pack 103014 F
250
Pack
  • Pack of 250: Contains 250 high-quality manilla envelopes
  • Self-Seal Closure: Features a reliable self-seal for convenience
  • Size: 381 x 254mm, ideal for standard documents
  • Sustainable Choice: Made with 100% recycled materials
This item is out of stock

5 Star Office Envelope Recycled Pocket Self Seal 90gsm 381mm x 254mm Manilla (250 Pack)

Please enter your email address below and we will contact you as soon as this item becomes available. Your email will not be used for anything else.

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?