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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 59 products
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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

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Order now for dispatch today

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 today

Order now for dispatch today

Blake Evolve Envelope Recycled Self Seal 100gsm C5 White (500 Pack)

Blake Evolve Envelope Recycled Self Seal 100gsm C5 White 500 Pack 236629 F
500
Pack
  • Made from 100% recycled 100gsm paper.
  • Convenient Self-Seal: Eliminates the need for tape or moisture.
  • C5 Size: Fits A4 sheets folded or A5 documents.
  • Large Quantity: Pack of 500 white envelopes.
£41.05
£34.21 ex. VAT
£34.21
£41.05 inc. VAT
£41.05
£34.21 ex. VAT
£34.21
£41.05 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

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 today

Order now for dispatch today

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White (500 Pack)

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White 500 Pack 118888 F
500
Pack
  • Pack of 500: Contains 500 bright white C6 envelopes.
  • Secure & Confidential: Opaque blue interior for added privacy.
  • Durable Quality: Crafted from 120gsm paper for a premium feel.
  • Easy to Use: Features a convenient self-seal closure.
£61.42
£51.18 ex. VAT
£51.18
£61.42 inc. VAT
£61.42
£51.18 ex. VAT
£51.18
£61.42 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelope Wallet Self Seal 120gsm DL White (500 Pack)

Plus Fabric Envelope Wallet Self Seal 120gsm DL White 500 Pack 107693 F
500
Pack
  • Secure & Professional: Crafted with an opaque blue interior for confidential mailing.
  • Durable Quality: Made from strong 120gsm paper for reliable protection.
  • Convenient Self-Seal: Saves time with a quick and easy closure.
  • Versatile DL Size: Fits A5 sheets folded once, or A4 sheets folded twice.
£52.88
£44.07 ex. VAT
£44.07
£52.88 inc. VAT
£52.88
£44.07 ex. VAT
£44.07
£52.88 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Evolve Envelope Recycled Wallet Self Seal 90gsm DL White (1000 Pack)

Blake Evolve Envelope Recycled Wallet Self Seal 90gsm DL White 1000 Pack 110265 F
1000
Pack
  • Size: DL – fits A4/A5 inserts
  • Convenient: Self-seal closure for quick and secure mailing
  • Quantity: Pack of 1000 white envelopes
£49.17
£40.98 ex. VAT
£40.98
£49.17 inc. VAT
£49.17
£40.98 ex. VAT
£40.98
£49.17 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

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 today

Order now for dispatch today

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 today

Order now for dispatch today

Plus Fabric Envelope Self Seal 120gsm C5 White (500 Pack)

Plus Fabric Envelope Self Seal 120gsm C5 White 500 Pack 132981 F
500
Pack
  • Pack of 500 self-seal C5 envelopes
  • Made from durable 120gsm bright white paper
  • Suitable for A5 & folded A4 documents
  • Ideal for both business & personal mail
£73.33
£61.11 ex. VAT
£61.11
£73.33 inc. VAT
£73.33
£61.11 ex. VAT
£61.11
£73.33 inc. VAT

Order now for dispatch today

Order now for dispatch today

CTS Envelope Plain Non Window 80gsm C5 Manilla (500 Pack)

CTS Envelope Plain Non Window 80gsm C5 Manilla 500 Pack 809033 F
500
Pack
  • Pack Size: 500 high-quality C5 manilla envelopes
  • Convenient Closure: Features a quick and easy self-seal adhesive flap
  • Durable Material: Crafted from 80gsm manilla paper for reliable postage
  • Accommodates A5: Designed to comfortably fit A5 sized documents
£16.22
£13.52 ex. VAT
£13.52
£16.22 inc. VAT
£16.22
£13.52 ex. VAT
£13.52
£16.22 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

CTS Envelope Plain Non Window 80gsm DL Manilla (1000 Pack)

CTS Envelope Plain Non Window 80gsm DL Manilla 1000 Pack 809035 F
1000
Pack
  • Size: 110x220mm (DL) - Fits tri-folded A4 sheets.
  • Self-Seal: Convenient self-seal adhesive flap – no licking needed.
  • Quantity: Pack of 250 high-quality Manilla envelopes.
  • Paper Weight: Durable 80gsm paper for a professional finish.
£21.33
£17.78 ex. VAT
£17.78
£21.33 inc. VAT
£21.33
£17.78 ex. VAT
£17.78
£21.33 inc. VAT

Order now for dispatch today

Order now for dispatch today

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.

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)

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 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)

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.

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)

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.

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)

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 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)

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 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)

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?