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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 54 products
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Blake Peel and Seal Padded Bubble Pocket Envelopes C5 White (100 Pack)

Blake Peel and Seal Padded Bubble Pocket Envelopes C5 White 100 Pack
100
Pack
  • Size: C5 (162mm x 229mm)
  • Pack of 100
  • Peel and seal
  • Shock-absorbent inner lining
£10.36
£8.63 ex. VAT
£8.63
£10.36 inc. VAT
£10.36
£8.63 ex. VAT
£8.63
£10.36 inc. VAT

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Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel & Seal 120gsm C4 Manilla (100 Pack)

Q Connect Envelope 25mm Gusset Peel Seal 120gsm C4 Manilla 100 Pack 123713 F
100
Pack
  • Suitable for A4 documents
  • 25mm expanding gusset for bulky items
  • Strong peel and seal closure
  • Pack of 100 x 120gsm manilla envelopes
£15.42
£12.85 ex. VAT
£12.85
£15.42 inc. VAT
£15.42
£12.85 ex. VAT
£12.85
£15.42 inc. VAT

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Order now for dispatch today

Q-Connect Envelope Plain Wallet Peel & Seal 100gsm DL White (500 Pack)

Q Connect Envelope Plain Wallet Peel Seal 100gsm DL White 500 Pack 280226 F
500
Pack
  • 500 pack of plain white wallet envelopes
  • Made from quality 100gsm paper
  • Secure peel and seal closure – no licking!
  • Accommodates A4/A5 sheets folded
£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 Gusset Peel & Seal 120gsm C4 White (125 Pack)

Q Connect Envelope Gusset Peel Seal 120gsm C4 White 125 Pack 142684 F
125
Pack
  • Suitable for A4 documents
  • 125 envelopes per pack
  • Features a 25mm expanding gusset
  • Secure peel and seal closure
£26.74
£22.28 ex. VAT
£22.28
£26.74 inc. VAT
£26.74
£22.28 ex. VAT
£22.28
£26.74 inc. VAT

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Order now for dispatch today

Blake PurelyEveryday Peel & Seal White Envelope 100gsm C5 White (100 Pack)

Blake PurelyEveryday Peel Seal White Envelope 100gsm C5 White 100 Pack 752568 F
100
Pack
  • Size: C5
  • Quantity: 100 Envelopes
  • Closure: Peel & Seal - no licking needed!
  • Paper Weight: 100gsm for a professional feel
£9.94
£8.28 ex. VAT
£8.28
£9.94 inc. VAT
£9.94
£8.28 ex. VAT
£8.28
£9.94 inc. VAT

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Order now for dispatch today

Q-Connect Envelope Pocket Peel & Seal 100gsm C5 White (500 Pack)

Q Connect Envelope Pocket Peel Seal 100gsm C5 White 500 Pack 280224 F
500
Pack
  • Bulk Pack: Contains 500 white envelopes for ample supply.
  • Secure Closure: Features a convenient peel and seal for a tidy, secure seal.
  • Paper Weight: Crafted from quality 100gsm paper for a professional finish.
  • Sheet Compatibility: Suitable for A4 (folded) or A5 (unfolded) sheets.
£26.26
£21.88 ex. VAT
£21.88
£26.26 inc. VAT
£26.26
£21.88 ex. VAT
£21.88
£26.26 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelope Gusset 25mm Peel & Seal 115gsm C4 Manilla (125 Pack)

5 Star Office Envelope Gusset 25mm Peel Seal 115gsm C4 Manilla 125 Pack 140107 F
125
Pack
  • Pack of 125 manilla C4 envelopes
  • Peel & Seal closure for quick and easy use
  • 25mm gusset accommodates bulkier mail
  • 115gsm paper weight for reliable quality
£21.70
£18.08 ex. VAT
£18.08
£21.70 inc. VAT
£21.70
£18.08 ex. VAT
£18.08
£21.70 inc. VAT

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Order now for dispatch today

5 Star Office Envelope Pocket Peel & Seal 100gsm C5 White (500 Pack)

5 Star Office Envelope Pocket Peel Seal 100gsm C5 White 500 Pack 160514 F
500
Pack
  • Size: C5 (229x162mm) for standard mailings.
  • Peel & Seal Closure: Quick and effortless fastening.
  • Pocket Opening: Easy insertion and removal of contents.
  • Pack of 500: Ideal for busy offices and frequent use.
£19.96
£16.63 ex. VAT
£16.63
£19.96 inc. VAT
(1)
£19.96
£16.63 ex. VAT
£16.63
£19.96 inc. VAT
(1)

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Order now for dispatch today

Blake PurelyEveryday Peel & Seal Envelope 100gsm DL White (50 Pack)

Blake PurelyEveryday Peel Seal Envelope 100gsm DL White 50 Pack 434293 F
50
Pack
  • Pack Size: 50 Envelopes
  • Closure Type: Peel & Seal
  • Paper Weight: 100gsm for durability
  • Envelope Size: Dl
£5.14
£4.28 ex. VAT
£4.28
£5.14 inc. VAT
(2)
£5.14
£4.28 ex. VAT
£4.28
£5.14 inc. VAT
(2)

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Order now for dispatch today

5 Star Value Envelope Gusset 25mm Peel & Seal 115gsm C4 Manilla (125 Pack)

5 Star Value Envelope Gusset 25mm Peel Seal 115gsm C4 Manilla 125 Pack 282936 F
125
Pack
  • Size: C4
  • Gusset: 25mm for larger items
  • Closure: Peel and Seal for swift fastening
  • Quantity: Pack of 125 manilla envelopes
£21.72
£18.10 ex. VAT
£18.10
£21.72 inc. VAT
£21.72
£18.10 ex. VAT
£18.10
£21.72 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel & Seal 120gsm 381mm x 254mm Manilla (100 Pack)

Q Connect Envelope 25mm Gusset Peel Seal 120gsm 381mm x 254mm Manilla 100 Pack 102004 F
100
Pack
  • Dimensions: 381 x 254 x 25mm
  • 25mm expanding gusset for bulky items
  • Pack of 100 durable 120gsm manilla envelopes
  • Strong peel and seal closure for secure mailing
£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

5 Star Office Envelope Wallet Peel & Seal 100gsm DL White (500 Pack)

5 Star Office Envelope Wallet Peel Seal 100gsm DL White 500 Pack 104769 F
500
Pack
  • Size: DL (220x110mm) - Ideal for standard documents
  • Quantity: 500 envelopes per pack – a long-lasting supply
  • Peel and Seal Closure: Saves time and ensures a secure seal
  • Wallet Opening: Allows easy access to contents
£16.13
£13.44 ex. VAT
£13.44
£16.13 inc. VAT
(2)
£16.13
£13.44 ex. VAT
£13.44
£16.13 inc. VAT
(2)

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelope Pocket Peel & Seal 90gsm C4 White (10 Pack)

5 Star Office Envelope Pocket Peel Seal 90gsm C4 White 10 Pack 912084 F
10
Pack
  • Pack of 10 high-quality C4 envelopes
  • Suitable for A4 documents
  • 324 x 229mm dimensions
  • Peel and seal closure for secure mailing
£2.98
£2.48 ex. VAT
£2.48
£2.98 inc. VAT
(1)
£2.98
£2.48 ex. VAT
£2.48
£2.98 inc. VAT
(1)

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Order now for dispatch today

New Guardian Envelope Gusset 130gsm C4 Manilla (100 Pack)

New Guardian Envelope Gusset 130gsm C4 Manilla 100 Pack 101376 F
100
Pack
  • Pack of 100 C4 Envelopes for A4 Documents
  • 25mm Expanding Gusset - Accommodates Bulky Items
  • Durable 130gsm Paper for Reliable Protection
  • Easy Peel & Seal Closure with Strong Power-Tac Adhesion
£66.85
£55.71 ex. VAT
£55.71
£66.85 inc. VAT
£66.85
£55.71 ex. VAT
£55.71
£66.85 inc. VAT

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

5 Star Office Envelope Gusset 25mm Peel & Seal 120gsm C4 White (125 Pack)

5 Star Office Envelope Gusset 25mm Peel Seal 120gsm C4 White 125 Pack 284130 F
125
Pack
  • Pack Size: 125 high-quality C4 envelopes
  • Convenient Closure: Features a quick and easy peel and seal closure.
  • Expansive Gusset: 25mm gusset accommodates bulkier items.
  • Paper Quality: Made with 120gsm paper for a professional finish.
£30.46
£25.38 ex. VAT
£25.38
£30.46 inc. VAT
£30.46
£25.38 ex. VAT
£25.38
£30.46 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel & Seal 120gsm 406mm x 305mm Manilla (100 Pack)

Q Connect Envelope 25mm Gusset Peel Seal 120gsm 406mm x 305mm Manilla 100 Pack 141280 F
100
Pack
  • Dimensions: 406 x 305 x 25mm
  • Ideal for catalogues, reports & bulky items
  • 120gsm paper for durable mailing
  • Pack of 100 manilla envelopes with peel & seal closure
£34.30
£28.58 ex. VAT
£28.58
£34.30 inc. VAT
£34.30
£28.58 ex. VAT
£28.58
£34.30 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Gusset 130gsm C4 Manilla (25 Pack)

New Guardian Envelope Gusset 130gsm C4 Manilla 25 Pack 102300 F
25
Pack
  • Includes 25 durable manilla envelopes
  • Designed for A4 documents with a 25mm expanding gusset for bulky items
  • Crafted from durable 130gsm paper for reliable protection
  • Features a convenient peel and seal closure with Power-Tac adhesion
£22.63
£18.86 ex. VAT
£18.86
£22.63 inc. VAT
£22.63
£18.86 ex. VAT
£18.86
£22.63 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Gusset Peel & Seal 120gsm C5 White (125 Pack)

Q Connect Envelope Gusset Peel Seal 120gsm C5 White 125 Pack 169201 F
125
Pack
  • Pack of 125 white C5 envelopes
  • Peel and seal closure for secure mailing
  • 25mm expanding gusset accommodates bulkier items
  • Suitable for A5 or folded A4 sheets
£20.14
£16.78 ex. VAT
£16.78
£20.14 inc. VAT
£20.14
£16.78 ex. VAT
£16.78
£20.14 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 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

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 today

Order now for dispatch today

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 today

Order now for dispatch today

Basildon Bond Self Seal Envelope 120gsm C5 White (50 Pack)

Basildon Bond Self Seal Envelope 120gsm C5 White 50 Pack 113599 F
50
Pack
  • 50 Pack
  • Recycled paper
  • Weight: 120gsm
  • Peel and stick closure
£12.85
£10.71 ex. VAT
£10.71
£12.85 inc. VAT
£12.85
£10.71 ex. VAT
£10.71
£12.85 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel & Seal Envelope 90gsm C4 White (500 Pack)

County Stationery Peel Seal Envelope 90gsm C4 White 500 Pack 523194 F
500
Pack
  • Pack Size: 500 envelopes (20 sets of 25)
  • Ideal For: Business mail, invoices & important documents
  • Closure Type: Self-seal adhesive for a secure finish
  • Paper Weight: Durable 90gsm paper
£56.72
£47.27 ex. VAT
£47.27
£56.72 inc. VAT
£56.72
£47.27 ex. VAT
£47.27
£56.72 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Envelope Wallet Peel & Seal 120gsm DL White (100 Pack)

Basildon Bond Envelope Wallet Peel Seal 120gsm DL White 100 Pack 103323 F
100
Pack
  • 100 high-quality envelopes
  • Fits A5 sheets folded once, or A4 sheets folded twice
  • Crafted from smooth, 120gsm white recycled paper
  • Ensures a secure, professional finish and saves time
£14.97
£12.48 ex. VAT
£12.48
£14.97 inc. VAT
£14.97
£12.48 ex. VAT
£12.48
£14.97 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Pocket Envelope Plain 120gsm C5 White (500 Pack)

Basildon Bond Pocket Envelope Plain 120gsm C5 White 500 Pack 129113 F
500
Pack
  • 500 Pack: Contains 500 plain white C5 envelopes.
  • Convenient Closure: Features a reliable peel and seal closure.
  • Versatile Size: Suitable for A5 or folded A4 documents.
£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

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 today

Order now for dispatch today

Basildon Bond Pocket Envelope 120gsm C4 White (50 Pack)

Basildon Bond Pocket Envelope 120gsm C4 White 50 Pack 144082 F
50
Pack
  • Pack of 50 plain white C4 envelopes
  • 120gsm Recycled Paper - environmentally conscious choice
  • A4 Document Size - suitable for unfolded A4
  • Peel & Seal Closure & Opaque Green Interior for secure, confidential mailing
£22.33
£18.61 ex. VAT
£18.61
£22.33 inc. VAT
£22.33
£18.61 ex. VAT
£18.61
£22.33 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel & Seal Envelope 70gsm C6 White (1000 Pack)

County Stationery Peel Seal Envelope 70gsm C6 White 1000 Pack 924765 F
1000
Pack
  • Quantity: 1,000 envelopes (20 packs of 50)
  • Size: C6 (114 x 162mm)
  • Closure: Easy-peel, self-adhesive
  • Colour: Plain White
£30.22
£25.18 ex. VAT
£25.18
£30.22 inc. VAT
£30.22
£25.18 ex. VAT
£25.18
£30.22 inc. VAT

Order now for dispatch today

Order now for dispatch today

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

Plus Fabric Envelope Peel Seal 120gsm C5 White 500 Pack 115743 F
500
Pack
  • Pack of 500 C5 envelopes
  • Suitable for A5 & folded A4 documents
  • Durable 120gsm paper with peel & seal closure
  • Features an integrated tear strip for easy opening
£80.96
£67.47 ex. VAT
£67.47
£80.96 inc. VAT
£80.96
£67.47 ex. VAT
£67.47
£80.96 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Pocket 130gsm C3 Manilla (125 Pack)

New Guardian Envelope Pocket 130gsm C3 Manilla 125 Pack 118797 F
125
Pack
  • Size: C3 (457 x 324mm) - Ideal for larger documents.
  • Quantity: 125 envelopes per pack - Great for business or home use.
  • Closure: Peel and Seal - Quick, easy, and secure.
  • Material: Durable 130gsm paper - Provides superior protection during transit.
£59.53
£49.61 ex. VAT
£49.61
£59.53 inc. VAT
£59.53
£49.61 ex. VAT
£49.61
£59.53 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric 25mm Gusset Envelope Peel & Seal 120gsm C4 White (100 Pack)

Plus Fabric 25mm Gusset Envelope Peel Seal 120gsm C4 White 100 Pack 101568 F
100
Pack
  • Suitable for A4 documents
  • 25mm expanding gusset for bulky mail
  • Made from strong 120gsm paper
  • Easy peel and seal closure
£105.94
£88.28 ex. VAT
£88.28
£105.94 inc. VAT
£105.94
£88.28 ex. VAT
£88.28
£105.94 inc. VAT

Order now for dispatch today

Order now for dispatch today

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 today

Order now for dispatch today

New Guardian Envelope 25mm Gusset Peal and Seal 130gsm 381mm x 254mm Manilla (100 Pack)

New Guardian Envelope 25mm Gusset Peal and Seal 130gsm 381mm x 254mm Manilla 100 Pack 106599 F
100
Pack
  • Pack Size: 100 manilla envelopes
  • Expanding Gusset: 25mm for thicker contents
  • Durable Paper: Crafted from 130gsm paper
  • Secure Closure: Features a simple peel and seal with Power-Tac adhesion
£80.89
£67.41 ex. VAT
£67.41
£80.89 inc. VAT
£80.89
£67.41 ex. VAT
£67.41
£80.89 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian 50mm Gusset Armour Envelope 130gsm C4 Manilla (100 Pack)

New Guardian 50mm Gusset Armour Envelope 130gsm C4 Manilla 100 Pack 114759 F
100
Pack
  • Durable Material: 130gsm paper with woven polyester reinforcement.
  • Secure Closure: Peel and seal with Power-Tac adhesion for a reliable bond.
  • A4 Compatible: C4 size, suitable for A4 documents.
  • Expanding Gusset: 50mm gusset accommodates thicker contents.
£108.18
£90.15 ex. VAT
£90.15
£108.18 inc. VAT
£108.18
£90.15 ex. VAT
£90.15
£108.18 inc. VAT

Order now for dispatch today

Order now for dispatch today

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?