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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 29 products
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Q-Connect Envelope 25mm Gusset Peel and Seal 120gsm C4 Manilla (100 Pack) KF3527

Q Connect Envelope 25mm Gusset Peel and Seal 120gsm C4 Manilla 100 Pack KF3527 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
£20.82
£17.35 ex. VAT
£17.35
£20.82 inc. VAT
£20.82
£17.35 ex. VAT
£17.35
£20.82 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Wallet Self Seal 120gsm DL White (1000 Pack) KF97366

Q Connect Envelopes Wallet Self Seal 120gsm DL White 1000 Pack KF97366 163628 F
1000
Pack
  • Pack of 1000 self-seal DL envelopes
  • Suitable for A4/A5 sheet sizes
  • Made from durable 120gsm white paper
  • Convenient self-seal closure for easy mailing
£27.49
£22.91 ex. VAT
£22.91
£27.49 inc. VAT
£27.49
£22.91 ex. VAT
£22.91
£27.49 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel and Seal 120gsm 381x254mm Manilla (100 Pack) KF3528

Q Connect Envelope 25mm Gusset Peel and Seal 120gsm 381x254mm Manilla 100 Pack KF3528 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
£26.57
£22.14 ex. VAT
£22.14
£26.57 inc. VAT
£26.57
£22.14 ex. VAT
£22.14
£26.57 inc. VAT

Order now for dispatch today

Order now for dispatch today

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White (100 Pack) F80275

Basildon Bond Envelopes Wallet Peel and Seal 120gsm DL White 100 Pack F80275 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
£12.47 ex. VAT
£12.47
£14.97 inc. VAT
£14.97
£12.47 ex. VAT
£12.47
£14.97 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White (250 Pack) M23270

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White 250 Pack M23270 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.
£36.04
£30.03 ex. VAT
£30.03
£36.04 inc. VAT
£36.04
£30.03 ex. VAT
£30.03
£36.04 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White (500 Pack) F23470

Plus Fabric Envelope Wallet Self Seal 120gsm C6 White 500 Pack F23470 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.
£60.66
£50.55 ex. VAT
£50.55
£60.66 inc. VAT
£60.66
£50.55 ex. VAT
£50.55
£60.66 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Gusset Peel and Seal 120gsm C4 White (125 Pack) KF02890

Q Connect Envelopes Gusset Peel and Seal 120gsm C4 White 125 Pack KF02890 142684 F
125
Pack
  • Suitable for A4 documents
  • 125 envelopes per pack
  • Features a 25mm expanding gusset
  • Secure peel and seal closure
£26.80
£22.33 ex. VAT
£22.33
£26.80 inc. VAT
£26.80
£22.33 ex. VAT
£22.33
£26.80 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

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

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

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

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

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

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

Basildon Bond Pocket Envelope 120gsm C4 White (250 Pack) M80120

Basildon Bond Pocket Envelope 120gsm C4 White 250 Pack M80120 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

£69.07
£57.56 ex. VAT
£57.56
£69.07 inc. VAT
£69.07
£57.56 ex. VAT
£57.56
£69.07 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric 25mm Gusset Envelopes Peel and Seal 120gsm C4 White (100 Pack) C26766

Plus Fabric 25mm Gusset Envelopes Peel and Seal 120gsm C4 White 100 Pack C26766 101568 F
100
Pack
  • Suitable for A4 documents
  • 25mm expanding gusset for bulky mail
  • Made from strong 120gsm paper
  • Easy peel and seal closure
£105.97
£88.31 ex. VAT
£88.31
£105.97 inc. VAT
£105.97
£88.31 ex. VAT
£88.31
£105.97 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Wallet Envelope Peel and Seal 120gsm C5 Black (250 Pack) BLK93027

Blake Wallet Envelope Peel and Seal 120gsm C5 Black 250 Pack BLK93027 453103 F
250
Pack
  • Size: C5 – fits A4 folded or A5 documents.
  • Closure: Peel and seal for secure mailing.
  • Quantity: 250 envelopes per pack.
  • Colour: Jet Black – adds a sophisticated touch.
£83.04
£69.20 ex. VAT
£69.20
£83.04 inc. VAT
£83.04
£69.20 ex. VAT
£69.20
£83.04 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Self Seal 120gsm C5 White (250 Pack) D23770

Plus Fabric Envelopes Self Seal 120gsm C5 White 250 Pack D23770 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
£49.18
£40.98 ex. VAT
£40.98
£49.18 inc. VAT
£49.18
£40.98 ex. VAT
£40.98
£49.18 inc. VAT

Back ordered item -
Due back in stock on the 9th June

Bong E-Green Plus 80mm Gusset Peel and Seal Mailer 120gsm C3 Manilla (200 Pack) 69115

Bong E Green Plus 80mm Gusset Peel and Seal Mailer 120gsm C3 Manilla 200 Pack 69115 611752 F
200
Pack
  • Durable & Waterproof: Crafted from 120gsm Kraft paper for reliable protection.
  • Extra Capacity: 80mm gusset accommodates thicker, bulkier items.
  • Secure Closure: Peel and seal design ensures a tamper-evident finish.
  • Convenient Features: Includes easy opening and a return address strip.
£146.55
£122.12 ex. VAT
£122.12
£146.55 inc. VAT
£146.55
£122.12 ex. VAT
£122.12
£146.55 inc. VAT

Order now for dispatch today

Order now for dispatch today

Bong E-Green 50mm Gusset Peel and Seal Mailer 120gsm C4 Manilla (250 Pack) 69113

Bong E Green 50mm Gusset Peel and Seal Mailer 120gsm C4 Manilla 250 Pack 69113 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.
£85.04
£70.87 ex. VAT
£70.87
£85.04 inc. VAT
£85.04
£70.87 ex. VAT
£70.87
£85.04 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White (500 Pack) H25470

Plus Fabric Envelopes Wallet Self Seal 120gsm DL White 500 Pack H25470 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.
£69.54
£57.95 ex. VAT
£57.95
£69.54 inc. VAT
£69.54
£57.95 ex. VAT
£57.95
£69.54 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelope Pocket Self Seal 120gsm C4 White (250 Pack) L26370

Plus Fabric Envelope Pocket Self Seal 120gsm C4 White 250 Pack L26370 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.
£84.19
£70.16 ex. VAT
£70.16
£84.19 inc. VAT
£84.19
£70.16 ex. VAT
£70.16
£84.19 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Wallet Envelope Peel and Seal 120gsm C5 Yellow (250 Pack) BLK93019

Blake Wallet Envelope Peel and Seal 120gsm C5 Yellow 250 Pack BLK93019 453097 F
250
Pack
  • Colour: Bright Banana Yellow – makes mail stand out.
  • Size: C5 – fits A4 folded or A5 unfolded.
  • Closure: Peel and seal for quick dispatch.
  • Pack Size: 250 envelopes per pack.
£47.17
£39.31 ex. VAT
£39.31
£47.17 inc. VAT
£47.17
£39.31 ex. VAT
£39.31
£47.17 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake Wallet Envelope Peel and Seal 120gsm C5 Red (250 Pack) BLK93020

Blake Wallet Envelope Peel and Seal 120gsm C5 Red 250 Pack BLK93020 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.
£74.56
£62.13 ex. VAT
£62.13
£74.56 inc. VAT
£74.56
£62.13 ex. VAT
£62.13
£74.56 inc. VAT

Order now for dispatch today

Order now for dispatch today

Bong E-Green 40mm Gusset Peel and Seal Mailer 210gsm C5 Manilla (250 Pack) 69112

Bong E Green 40mm Gusset Peel and Seal Mailer 210gsm C5 Manilla 250 Pack 69112 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.
£63.98
£53.32 ex. VAT
£53.32
£63.98 inc. VAT
£63.98
£53.32 ex. VAT
£53.32
£63.98 inc. VAT

Order now for dispatch today

Order now for dispatch today

Plus Fabric Envelopes Self Seal 120gsm C5 White (500 Pack) D26170

Plus Fabric Envelopes Self Seal 120gsm C5 White 500 Pack D26170 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
£73.82
£61.52 ex. VAT
£61.52
£73.82 inc. VAT
£73.82
£61.52 ex. VAT
£61.52
£73.82 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel and Seal 305x254 Manilla (100 Pack) KF3526

Q Connect Envelope 25mm Gusset Peel and Seal 305x254 Manilla 100 Pack KF3526 112032 F
100
Pack
  • Dimensions: 305 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
£34.27
£28.56 ex. VAT
£28.56
£34.27 inc. VAT
£34.27
£28.56 ex. VAT
£28.56
£34.27 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope 25mm Gusset Peel and Seal 120gsm 406x305mm Manilla (100 Pack) KF3529

Q Connect Envelope 25mm Gusset Peel and Seal 120gsm 406x305mm Manilla 100 Pack KF3529 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
This item is out of stock

Q-Connect Envelope 25mm Gusset Peel and Seal 120gsm 406x305mm Manilla (100 Pack) KF3529

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.

Basildon Bond Pocket Envelope 120gsm C4 White (50 Pack) L80281

Basildon Bond Pocket Envelope 120gsm C4 White 50 Pack L80281 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
This item is out of stock

Basildon Bond Pocket Envelope 120gsm C4 White (50 Pack) L80281

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?