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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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Cartridge People Self Seal Envelope 80gsm DL White (500 Pack)

Cartridge People Self Seal Envelope 80gsm DL White 500 Pack 47116 CP
500
Pack
  • Suitable for A4 folded twice in zigzag
  • Secure self-seal fastening
  • White, 80gsm paper
  • Pack of 500
£15.99
£13.33 ex. VAT
£13.33
£15.99 inc. VAT
£15.99
£13.33 ex. VAT
£13.33
£15.99 inc. VAT

Available for Next Day Delivery

Available for Next Day Delivery

Cartridge People Self Seal Envelope 80gsm C6 White (500 Pack)

Cartridge People Self Seal Envelope 80gsm C6 White 500 Pack 47114 CP
500
Pack
  • Suitable for A6, folded A5 documents or A4 folded in four
  • Secure self-seal fastening
  • White, 80gsm paper
  • Pack of 500
£14.99
£12.49 ex. VAT
£12.49
£14.99 inc. VAT
£14.99
£12.49 ex. VAT
£12.49
£14.99 inc. VAT

Available for Next Day Delivery

Available for Next Day Delivery

Cartridge People Self Seal Envelope 80gsm C5 White (25 Pack)

Cartridge People Self Seal Envelope 80gsm C5 White 25 Pack 47119 CP
25
Pack
  • Suitable for A5 paper and A4 folded in half
  • Secure self-seal fastening
  • White, 80gsm paper
  • Pack of 25
£4.99
£4.16 ex. VAT
£4.16
£4.99 inc. VAT
£4.99
£4.16 ex. VAT
£4.16
£4.99 inc. VAT

Available for Next Day Delivery

Available for Next Day Delivery

Cartridge People Self Seal Envelope 80gsm C5 White (500 Pack)

Cartridge People Self Seal Envelope 80gsm C5 White 500 Pack 47120 CP
500
Pack
  • Suitable for A5 paper and A4 folded in half
  • Secure self-seal fastening
  • White, 80gsm paper
  • Pack of 500
£19.99
£16.66 ex. VAT
£16.66
£19.99 inc. VAT
£19.99
£16.66 ex. VAT
£16.66
£19.99 inc. VAT

Available for Next Day Delivery

Available for Next Day Delivery

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)

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

Blake PurelyEveryday Self Seal Envelope 80gsm DL White (50 Pack)

Blake PurelyEveryday Self Seal Envelope 80gsm DL White 50 Pack 434301 F
50
Pack
  • Pack Size: 50 envelopes
  • Size & Weight: DL, 80gsm paper
  • Convenient: Self-seal closure - no moisture needed
  • Colour: Classic white for a professional finish
£3.58
£2.98 ex. VAT
£2.98
£3.58 inc. VAT
£3.58
£2.98 ex. VAT
£2.98
£3.58 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 80gsm C5 Manilla (500 Pack)

Q Connect Envelope Pocket Self Seal 80gsm C5 Manilla 500 Pack 122157 F
500
Pack
  • Pack Size: 500 envelopes per pack
  • Size & Compatibility: C5 size, fits A4 folded or A5 unfolded
  • Material: Durable 80gsm paper
  • Convenience: Features a self-seal closure for easy use
£19.54
£16.28 ex. VAT
£16.28
£19.54 inc. VAT
£19.54
£16.28 ex. VAT
£16.28
£19.54 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

5 Star Value Envelope Pocket Self Seal 80gsm C5 Manilla (500 Pack)

5 Star Value Envelope Pocket Self Seal 80gsm C5 Manilla 500 Pack 889369 F
500
Pack
  • Size: C5
  • Quantity: 500 envelopes per pack
  • Self-seal closure for easy mailing
  • Pocket opening on the shorter side
£19.77
£16.48 ex. VAT
£16.48
£19.77 inc. VAT
£19.77
£16.48 ex. VAT
£16.48
£19.77 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelope Plain Wallet Self Seal 80gsm DL White (25 Pack)

5 Star Office Envelope Plain Wallet Self Seal 80gsm DL White 25 Pack 912094 F
25
Pack
  • Pack of 25 plain white wallet envelopes
  • Suitable for DL size mail & folded A4/A5 sheets
  • 80gsm paper for reliable performance
  • Features a simple and secure self-seal closure
£3.58
£2.98 ex. VAT
£2.98
£3.58 inc. VAT
(1)
£3.58
£2.98 ex. VAT
£2.98
£3.58 inc. VAT
(1)

Order now for dispatch today

Order now for dispatch today

County Stationery Peel & Seal Envelope 80gsm C5 White (250 Pack)

County Stationery Peel Seal Envelope 80gsm C5 White 250 Pack 523200 F
500
Pack
  • Size: C5 (229 x 162mm) - Ideal for standard correspondence.
  • Quantity: 500 envelopes (20 packs of 25) – A generous supply.
  • Convenient Closure: Peel and seal for quick and easy use.
  • Quality Paper: Crafted from 80gsm paper for a professional feel.
£32.80
£27.33 ex. VAT
£27.33
£32.80 inc. VAT
£32.80
£27.33 ex. VAT
£27.33
£32.80 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel & Seal Envelope 80gsm DL White (1000 Pack)

County Stationery Peel Seal Envelope 80gsm DL White 1000 Pack 523186 F
1000
Pack
  • Large Quantity: 1000 envelopes per pack (20 x 50)
  • Convenient Closure: Peel and seal – no licking needed!
  • Standard DL Size: Ideal for A4 documents and letters.
  • 80gsm Paper Weight: Reliable and durable for everyday use.
£35.90
£29.92 ex. VAT
£29.92
£35.90 inc. VAT
£35.90
£29.92 ex. VAT
£29.92
£35.90 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelope Recycled Wallet Self Seal Lightweight 80gsm C6 White (1000 Pack)

5 Star Office Envelope Recycled Wallet Self Seal Lightweight 80gsm C6 White 1000 Pack 121386 F
1000
Pack
  • Size C6 (114x162mm) - ideal for standard correspondence.
  • Pack of 1000 - provides a large supply for office use.
  • Self-Seal & Wallet Opening - for easy and secure document handling.
  • 100% Recycled Materials - a sustainable stationery choice.
£30.43
£25.36 ex. VAT
£25.36
£30.43 inc. VAT
£30.43
£25.36 ex. VAT
£25.36
£30.43 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 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

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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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?