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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 149 products
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Q-Connect Envelope Pocket Self Seal 115gsm 381x254mm Manilla (250 Pack) KF3459

Q Connect Envelope Pocket Self Seal 115gsm 381x254mm Manilla 250 Pack KF3459 151596 F
250
Pack
  • Size: 381 x 254mm
  • Paper Weight: 115gsm for reliable protection
  • Convenient: Self-seal closure for quick use
  • Eco-Friendly: Made with 75% recycled content
£22.18
£18.48 ex. VAT
£18.48
£22.18 inc. VAT
£22.18
£18.48 ex. VAT
£18.48
£22.18 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Value Envelope Gusset 25mm Peel and Seal 115gsm C4 Manilla (125 Pack) 652532

5 Star Value Envelope Gusset 25mm Peel and Seal 115gsm C4 Manilla 125 Pack 652532 282936 F
125
Pack
  • Size: C4
  • Gusset: 25mm for larger items
  • Closure: Peel and Seal for swift fastening
  • Quantity: Pack of 125 manilla envelopes
£20.91
£17.42 ex. VAT
£17.42
£20.91 inc. VAT
£20.91
£17.42 ex. VAT
£17.42
£20.91 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Pocket Gummed 70gsm C5 Manilla (500 Pack) KF3426

Q Connect Envelopes Pocket Gummed 70gsm C5 Manilla 500 Pack KF3426 123286 F
500
Pack
  • Size: C5
  • Quantity: 500
  • Paper Weight: 70gsm
  • Fits: A4 folded or A5 unfolded
£19.78
£16.48 ex. VAT
£16.48
£19.78 inc. VAT
£19.78
£16.48 ex. VAT
£16.48
£19.78 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Peel/Seal 130gsm C4 Manilla (250 Pack) J26339

New Guardian Envelope Peel Seal 130gsm C4 Manilla 250 Pack J26339 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
£68.28
£56.90 ex. VAT
£56.90
£68.28 inc. VAT
£68.28
£56.90 ex. VAT
£56.90
£68.28 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Gusset Peel and Seal 120gsm C5 White (125 Pack) KF02889

Q Connect Envelopes Gusset Peel and Seal 120gsm C5 White 125 Pack KF02889 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
£21.71
£18.09 ex. VAT
£18.09
£21.71 inc. VAT
£21.71
£18.09 ex. VAT
£18.09
£21.71 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 115gsm 406x305mm Manilla (250 Pack) KF3450

Q Connect Envelope Pocket Self Seal 115gsm 406x305mm Manilla 250 Pack KF3450 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
£31.60
£26.33 ex. VAT
£26.33
£31.60 inc. VAT
£31.60
£26.33 ex. VAT
£26.33
£31.60 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Wallet Self Seal 80gsm C6 White (1000 Pack) KF02714

Q Connect Envelope Wallet Self Seal 80gsm C6 White 1000 Pack KF02714 139147 F
1000
Pack
  • Contains 1000 self-seal envelopes for mailing and archiving
  • Holds unfolded A6 or folded A5 documents
  • Made from bright white 80gsm paper for a professional finish
  • Supplied in packs of 50 for easy distribution
£43.05
£35.87 ex. VAT
£35.87
£43.05 inc. VAT
£43.05
£35.87 ex. VAT
£35.87
£43.05 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 90gsm 381x254mm Manilla (250 Pack) KF3511

Q Connect Envelope Pocket Self Seal 90gsm 381x254mm Manilla 250 Pack KF3511 109849 F
250
Pack
  • Size: 381 x 254mm
  • Paper Weight: 90gsm for reliable performance
  • Closure: Convenient self-seal for secure mailing
  • Eco-Friendly: Made with 75% recycled content
£21.53
£17.94 ex. VAT
£17.94
£21.53 inc. VAT
£21.53
£17.94 ex. VAT
£17.94
£21.53 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 90gsm 254x178mm Manilla (250 Pack) KF3445

Q Connect Envelope Pocket Self Seal 90gsm 254x178mm Manilla 250 Pack KF3445 104595 F
250
Pack
  • Size: 254 x 178mm
  • Pack of 250 manilla envelopes
  • Self-seal closure for easy use
  • Made with 75% recycled content
£19.84
£16.53 ex. VAT
£16.53
£19.84 inc. VAT
£19.84
£16.53 ex. VAT
£16.53
£19.84 inc. VAT

Order now for dispatch today

Order now for dispatch today

Value Evolve Envelopes Recycled Pocket Self Seal 100gsm C4 White (250 Pack) RD7891

Value Evolve Envelopes Recycled Pocket Self Seal 100gsm C4 White 250 Pack RD7891 181440 F
250
Pack
  • Eco-Friendly: 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.
£36.52
£30.43 ex. VAT
£30.43
£36.52 inc. VAT
£36.52
£30.43 ex. VAT
£30.43
£36.52 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelope Pocket Peel and Seal 120gsm C4 White (250 Pack) K26739

Plus Fabric Envelope Pocket Peel and Seal 120gsm C4 White 250 Pack K26739 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
£104.29
£86.91 ex. VAT
£86.91
£104.29 inc. VAT
£104.29
£86.91 ex. VAT
£86.91
£104.29 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel and Seal Envelopes 80gsm DL White (1000 Pack) C504

County Stationery Peel and Seal Envelopes 80gsm DL White 1000 Pack C504 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.
£34.18
£28.48 ex. VAT
£28.48
£34.18 inc. VAT
£34.18
£28.48 ex. VAT
£28.48
£34.18 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Gusset 25mm Peel and Seal 120gsm C4 White (125 Pack) 930191

5 Star Office Envelopes Gusset 25mm Peel and Seal 120gsm C4 White 125 Pack 930191 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.
£25.44
£21.20 ex. VAT
£21.20
£25.44 inc. VAT
£25.44
£21.20 ex. VAT
£21.20
£25.44 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Armour Envelopes Gusset 130gsm C4 Manilla (100 Pack) A28113

New Guardian Armour Envelopes Gusset 130gsm C4 Manilla 100 Pack A28113 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.
£138.18
£115.15 ex. VAT
£115.15
£138.18 inc. VAT
£138.18
£115.15 ex. VAT
£115.15
£138.18 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Self Seal Envelope C5 White (50 Pack) B80277

Image Coming Soon
50
Pack
  • 50 Pack
  • Recycled paper
  • Weight: 120gsm
  • Peel and stick closure
£10.33
£8.61 ex. VAT
£8.61
£10.33 inc. VAT
£10.33
£8.61 ex. VAT
£8.61
£10.33 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 90gsm B4 Manilla (250 Pack) KF02893

Q Connect Envelope Pocket Self Seal 90gsm B4 Manilla 250 Pack KF02893 130378 F
250
Pack
  • Size: 353 x 250mm (B4)
  • Quantity: Pack of 250 envelopes
  • Paper Weight: 90gsm
  • Closure: Self-seal adhesive flap
£34.54
£28.78 ex. VAT
£28.78
£34.54 inc. VAT
£34.54
£28.78 ex. VAT
£28.78
£34.54 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Peel and Seal 120gsm C5 White (500 Pack) B26139

Plus Fabric Envelopes Peel and Seal 120gsm C5 White 500 Pack B26139 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
£89.24
£74.37 ex. VAT
£74.37
£89.24 inc. VAT
£89.24
£74.37 ex. VAT
£74.37
£89.24 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Recycled Pocket Peel and Seal 115gsm 381x254mm Manilla (250 Pack) D90015

5 Star Office Envelopes Recycled Pocket Peel and Seal 115gsm 381x254mm Manilla 250 Pack D90015 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
  • Eco-Friendly: Made with 100% recycled content
£26.03
£21.69 ex. VAT
£21.69
£26.03 inc. VAT
£26.03
£21.69 ex. VAT
£21.69
£26.03 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Self Seal 90gsm C4 White (250 Pack) F90014

5 Star Office Envelopes Pocket Self Seal 90gsm C4 White 250 Pack F90014 156628 F
250
Pack
  • Size: C4 (324x229mm) - Ideal for standard business documents
  • Self-Seal Closure: No licking needed for quick and easy sealing
  • 90gsm Paper Weight: Durable and reliable quality paper
  • Pack of 250: Provides a large supply for extended use
£25.01
£20.84 ex. VAT
£20.84
£25.01 inc. VAT
£25.01
£20.84 ex. VAT
£20.84
£25.01 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White (500 Pack) C80116

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White 500 Pack C80116 105220 F
500
Pack
  • 500 Envelopes per Pack - Ideal for frequent mailing
  • 100% Recycled Paper - Environmentally conscious 120gsm material
  • DL Size - Fits A5 or folded A4 sheets
  • Peel and Seal Closure - Secure, professional and time-saving
£42.37
£35.31 ex. VAT
£35.31
£42.37 inc. VAT
£42.37
£35.31 ex. VAT
£35.31
£42.37 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla (250 Pack) D26103

New Guardian Envelope Pocket Self Seal 130gsm C5 Manilla 250 Pack D26103 139227 F
250
Pack
  • Pack Size: 250 envelopes
  • Envelope Size: C5
  • Paper Weight: 130gsm for durability
  • Closure Type: Self-seal for easy & secure use
£40.63
£33.86 ex. VAT
£33.86
£40.63 inc. VAT
£40.63
£33.86 ex. VAT
£33.86
£40.63 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Wallet Self Seal 100gsm DL White (1000 Pack) KF3514

Q Connect Envelopes Wallet Self Seal 100gsm DL White 1000 Pack KF3514 119404 F
1000
Pack
  • Pack of 1000: Contains 1000 white wallet envelopes.
  • DL Size: Suitable for A4/A5 folded sheets.
  • 100gsm Paper: Crafted from quality 100gsm white paper.
  • Self-Seal Closure: Features a convenient and secure self-seal.
£26.10
£21.75 ex. VAT
£21.75
£26.10 inc. VAT
£26.10
£21.75 ex. VAT
£21.75
£26.10 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel and Seal Envelopes 80gsm C5 White (250 Pack) C513

County Stationery Peel and Seal Envelopes 80gsm C5 White 250 Pack C513 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.
£34.10
£28.42 ex. VAT
£28.42
£34.10 inc. VAT
£34.10
£28.42 ex. VAT
£28.42
£34.10 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 135gsm C3 Manilla (125 Pack) KF71465

Q Connect Envelope Pocket Self Seal 135gsm C3 Manilla 125 Pack KF71465 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.
£35.20
£29.33 ex. VAT
£29.33
£35.20 inc. VAT
£35.20
£29.33 ex. VAT
£29.33
£35.20 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Wallet Peel and Seal 120gsm DL White (500 Pack)E27370

Plus Fabric Envelopes Wallet Peel and Seal 120gsm DL White 500 Pack E27370 127233 F
500
Pack
  • Secure & Professional: Ideal for confidential documents and professional presentations.
  • Durable Material: Crafted from robust 120gsm paper for lasting quality.
  • Convenient Closure: Features a peel and seal closure with a tear strip for easy access.
  • Versatile Size: Fits A5 sheets folded once, or A4 sheets folded twice.
£76.05
£63.37 ex. VAT
£63.37
£76.05 inc. VAT
£76.05
£63.37 ex. VAT
£63.37
£76.05 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Envelopes Pocket 130gsm C5 Manilla (250 Pack) L26039

New Guardian Envelopes Pocket 130gsm C5 Manilla 250 Pack L26039 101292 F
250
Pack
  • Size: C5
  • Paper Weight: 130gsm
  • Closure: Power-Tac peel and seal with tear strip
  • Pack Quantity: 250 envelopes
£37.73
£31.44 ex. VAT
£31.44
£37.73 inc. VAT
£37.73
£31.44 ex. VAT
£31.44
£37.73 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Pocket Envelope Plain 120gsm C5 White (500 Pack) L80118

Basildon Bond Pocket Envelope Plain 120gsm C5 White 500 Pack L80118 129113 F
500
Pack
  • 500 Pack: Contains 500 plain white C5 envelopes.
  • Eco-Friendly: Made from 100% recycled 120gsm paper.
  • Convenient Closure: Features a reliable peel and seal closure.
  • Versatile Size: Suitable for A5 or folded A4 documents.
£94.26
£78.55 ex. VAT
£78.55
£94.26 inc. VAT
£94.26
£78.55 ex. VAT
£78.55
£94.26 inc. VAT

Back ordered item -
Due back in stock on the 14th June

Q-Connect Envelopes Pocket Self Seal 80gsm C4 Manilla (250 Pack) KF02720

Q Connect Envelopes Pocket Self Seal 80gsm C4 Manilla 250 Pack KF02720 154378 F
250
Pack
  • Contains 250 manilla C4 envelopes
  • Self-seal closure for convenience
  • Suitable for A4 documents
  • Durable 80gsm paper
£22.68
£18.90 ex. VAT
£18.90
£22.68 inc. VAT
£22.68
£18.90 ex. VAT
£18.90
£22.68 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel and Seal Envelope 70gsm C6 White (1000 Pack) C516

County Stationery Peel and Seal Envelope 70gsm C6 White 1000 Pack C516 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
£28.78
£23.98 ex. VAT
£23.98
£28.78 inc. VAT
£28.78
£23.98 ex. VAT
£23.98
£28.78 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Self Seal 90gsm C5 White (500 Pack) B90016

5 Star Office Envelopes Pocket Self Seal 90gsm C5 White 500 Pack B90016 102743 F
500
Pack
  • Size: C5 (229x162mm) - Ideal for standard office correspondence.
  • Quantity: 500 envelopes per pack - Provides a long-lasting supply.
  • Self-Seal Closure: No need for moistening or tape for quick and easy sealing.
  • Pocket Opening: Effortless document insertion and removal from the shorter side.
£26.97
£22.47 ex. VAT
£22.47
£26.97 inc. VAT
£26.97
£22.47 ex. VAT
£22.47
£26.97 inc. VAT

Order now for dispatch today

Order now for dispatch today

County Stationery Peel and Seal Envelopes 90gsm C4 White (500 Pack) C509

County Stationery Peel and Seal Envelopes 90gsm C4 White 500 Pack C509 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
£64.03
£53.36 ex. VAT
£53.36
£64.03 inc. VAT
£64.03
£53.36 ex. VAT
£53.36
£64.03 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Evolve Envelopes Recycled Self Seal 100gsm C5 White (500 Pack) RD7893

Blake Evolve Envelopes Recycled Self Seal 100gsm C5 White 500 Pack RD7893 236629 F
500
Pack
  • Eco-Friendly: 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.
£40.16
£33.47 ex. VAT
£33.47
£40.16 inc. VAT
£40.16
£33.47 ex. VAT
£33.47
£40.16 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Self Seal 90gsm C4 Manilla (250 Pack) F90022

5 Star Office Envelopes Pocket Self Seal 90gsm C4 Manilla 250 Pack F90022 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
£25.93
£21.61 ex. VAT
£21.61
£25.93 inc. VAT
£25.93
£21.61 ex. VAT
£21.61
£25.93 inc. VAT

Order now for dispatch today

Order now for dispatch today

New Guardian Strong Pocket Envelopes Peel/Seal 130gsm DL Manilla (500 Pack) E26503

New Guardian Strong Pocket Envelopes Peel Seal 130gsm DL Manilla 500 Pack E26503 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
£55.48
£46.23 ex. VAT
£46.23
£55.48 inc. VAT
£55.48
£46.23 ex. VAT
£46.23
£55.48 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Recycled Pocket Self Seal 115gsm 406x305mm Manilla (250 Pack) D90023

5 Star Office Envelopes Recycled Pocket Self Seal 115gsm 406x305mm Manilla 250 Pack D90023 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.
£42.25
£35.21 ex. VAT
£35.21
£42.25 inc. VAT
£42.25
£35.21 ex. VAT
£35.21
£42.25 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Padded 50mm Gusset Envelopes Peel and Seal 140gsm C5 White (100 Pack) KF3530

Q Connect Padded 50mm Gusset Envelopes Peel and Seal 140gsm C5 White 100 Pack KF3530 113243 F
100
Pack
  • Size: C5 (229 x 162 x 50mm) - Perfect for documents & small parcels.
  • 100-Pack: Includes 100 envelopes per pack for ample supply.
  • Durable Protection: Robust construction with corrugated middle resists damage.
  • Eco-Friendly: Made from 100% recycled materials & fully recyclable.
£59.19
£49.32 ex. VAT
£49.32
£59.19 inc. VAT
£59.19
£49.32 ex. VAT
£49.32
£59.19 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?