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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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Purely Everyday Peel and Seal Padded Bubble Pocket Envelopes C5 White (100 Pack) 157583

Purely Everyday Peel and Seal Padded Bubble Pocket Envelopes C5 White 100 Pack 157583
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

Available for Next Day Delivery

Available for Next Day Delivery

Blake PurelyEveryday Self Seal Envelopes 90gsm DL White (50 Pack) 13882/50PR

Blake PurelyEveryday Self Seal Envelopes 90gsm DL White 50 Pack 13882 50PR 434540 F
50
Pack
  • Size: Dl
  • Quantity: 50 Envelopes
  • Self-Seal: No moisture needed for closure
  • Paper Weight: 90gsm for quality feel
£2.75
£2.29 ex. VAT
£2.29
£2.75 inc. VAT
(1)
£2.75
£2.29 ex. VAT
£2.29
£2.75 inc. VAT
(1)

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Order now for dispatch today

Blake PurelyEveryday Peel & Seal Envelopes 100gsm DL White (50 Pack) 23882/50PR

Blake PurelyEveryday Peel Seal Envelopes 100gsm DL White 50 Pack 23882 50PR 434293 F
50
Pack
  • Pack Size: 50 Envelopes
  • Closure Type: Peel & Seal
  • Paper Weight: 100gsm for durability
  • Envelope Size: Dl
£3.54
£2.95 ex. VAT
£2.95
£3.54 inc. VAT
(1)
£3.54
£2.95 ex. VAT
£2.95
£3.54 inc. VAT
(1)

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 90gsm C4 White (75 Pack) KF07560

Q Connect Envelope Pocket Self Seal 90gsm C4 White 75 Pack KF07560 610342 F
75
Pack
  • Suitable for A4 documents
  • Secure self-seal closure
  • Made from 90gsm white paper
  • Pack of 75 envelopes
£8.16
£6.80 ex. VAT
£6.80
£8.16 inc. VAT
£8.16
£6.80 ex. VAT
£6.80
£8.16 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Peel and Seal 80gsm C5 White (25 Pack) FS600401

5 Star Office Envelopes Pocket Peel and Seal 80gsm C5 White 25 Pack FS600401 912086 F
25
Pack
  • Pack Size: 25 high-quality envelopes
  • Size: C5 – fits A4 folded or A5 unfolded
  • Paper Weight: 80gsm for durability
  • Closure: Convenient peel & seal – no licking needed!
£1.99
£1.66 ex. VAT
£1.66
£1.99 inc. VAT
(2)
£1.99
£1.66 ex. VAT
£1.66
£1.99 inc. VAT
(2)

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Order now for dispatch today

Q-Connect Envelope Pocket Self Seal 90gsm C5 White (150 Pack) KF07558

Q Connect Envelope Pocket Self Seal 90gsm C5 White 150 Pack KF07558 610340 F
150
Pack
  • Size: C5 (162 x 299mm)
  • Paper Weight: 90gsm paper for quality feel
  • Closure: Convenient self-seal – no licking needed!
  • Pack Quantity: 150 envelopes per pack
£8.92
£7.43 ex. VAT
£7.43
£8.92 inc. VAT
£8.92
£7.43 ex. VAT
£7.43
£8.92 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake PurelyEveryday Peel & Seal White Envelopes 100gsm C5 White (100 Pack) 23893/100PR

Blake PurelyEveryday Peel Seal White Envelopes 100gsm C5 White 100 Pack 23893 100PR 752568 F
100
Pack
  • Size: C5
  • Quantity: 100 Envelopes
  • Closure: Peel & Seal - no licking needed!
  • Paper Weight: 100gsm for a professional feel
£8.77
£7.31 ex. VAT
£7.31
£8.77 inc. VAT
£8.77
£7.31 ex. VAT
£7.31
£8.77 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Peel and Seal 90gsm C4 White (10 Pack) FS600423

5 Star Office Envelopes Pocket Peel and Seal 90gsm C4 White 10 Pack FS600423 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
£2.73
£2.27 ex. VAT
£2.27
£2.73 inc. VAT
(1)
£2.73
£2.27 ex. VAT
£2.27
£2.73 inc. VAT
(1)

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Order now for dispatch today

5 Star Office Envelopes Plain Wallet Self Seal 80gsm DL White (25 Pack) FS600371

5 Star Office Envelopes Plain Wallet Self Seal 80gsm DL White 25 Pack FS600371 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
£1.63
£1.36 ex. VAT
£1.36
£1.63 inc. VAT
(1)
£1.63
£1.36 ex. VAT
£1.36
£1.63 inc. VAT
(1)

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Order now for dispatch today

Blake PurelyEveryday Self Seal Envelopes 80gsm DL White (50 Pack) 12882/50PR

Blake PurelyEveryday Self Seal Envelopes 80gsm DL White 50 Pack 12882 50PR 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
£2.47
£2.06 ex. VAT
£2.06
£2.47 inc. VAT
£2.47
£2.06 ex. VAT
£2.06
£2.47 inc. VAT

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Order now for dispatch today

Value Envelope Self Seal 80gsm DL White (1000 Pack) WX3454

Value Envelope Self Seal 80gsm DL White 1000 Pack WX3454 193502 F
1000
Pack
  • Pack of 1000 white DL envelopes
  • Suitable for A5 & A4 documents
  • 80gsm quality paper for a professional finish
  • Self-seal flap – no moistening needed
£23.57
£19.64 ex. VAT
£19.64
£23.57 inc. VAT
£23.57
£19.64 ex. VAT
£19.64
£23.57 inc. VAT

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Order now for dispatch today

Blake PurelyEveryday Self Seal Envelopes 90gsm C4 White (50 Pack) 12891/50PR

Blake PurelyEveryday Self Seal Envelopes 90gsm C4 White 50 Pack 12891 50PR 600528 F
50
Pack

  • Pack Size: Contains 50 high-quality, self-seal envelopes.

  • Convenience: Self-seal design eliminates licking or moistening.

  • Size & Use: C4 size, ideal for documents and letters.

  • Durability: Made with 90gsm paper for a premium feel and reliability.

£6.33
£5.27 ex. VAT
£5.27
£6.33 inc. VAT
£6.33
£5.27 ex. VAT
£5.27
£6.33 inc. VAT

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Order now for dispatch today

Q-Connect Envelopes Pocket Self Seal 90gsm C5 White (500 Pack) KF3469

Q Connect Envelopes Pocket Self Seal 90gsm C5 White 500 Pack KF3469 106530 F
500
Pack
  • Pack Size: 500 envelopes
  • Paper Weight: 90gsm white paper
  • Size: C5, fits A4 folded or A5 unfolded
  • Closure Type: Self-Seal for secure mailing
£20.65
£17.21 ex. VAT
£17.21
£20.65 inc. VAT
£20.65
£17.21 ex. VAT
£17.21
£20.65 inc. VAT

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Order now for dispatch today

Q-Connect Envelopes Self Seal 90gsm C4 White (250 Pack) KF3499

Q Connect Envelopes Self Seal 90gsm C4 White 250 Pack KF3499 104714 F
250
Pack
  • Size: C4
  • Paper Weight: 90gsm white paper
  • Pack Quantity: 250 envelopes
  • Closure: Convenient self-seal flap
£18.79
£15.66 ex. VAT
£15.66
£18.79 inc. VAT
£18.79
£15.66 ex. VAT
£15.66
£18.79 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Wallet Peel and Seal 100gsm DL White (500 Pack) 906594

5 Star Office Envelopes Wallet Peel and Seal 100gsm DL White 500 Pack 906594 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
£11.82
£9.85 ex. VAT
£9.85
£11.82 inc. VAT
£11.82
£9.85 ex. VAT
£9.85
£11.82 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Value Envelopes Self Seal 90gsm DL White (1000 Pack) 88469

5 Star Value Envelopes Self Seal 90gsm DL White 1000 Pack 88469 900346 F
1000
Pack
  • Pack of 1000 self-seal DL envelopes
  • Made from 90gsm paper for reliable use
  • Standard DL size - ideal for letters
  • Self-seal closure for a secure and tidy finish
£27.69
£23.07 ex. VAT
£23.07
£27.69 inc. VAT
£27.69
£23.07 ex. VAT
£23.07
£27.69 inc. VAT

Order now for dispatch today

Order now for dispatch today

Blake PurelyEveryday Envelopes Self Seal 90gsm C6 White (50 Pack) 2602/50PR

Blake PurelyEveryday Envelopes Self Seal 90gsm C6 White 50 Pack 2602 50PR 434537 F
50
Pack
  • Pack Size: 50 Envelopes
  • Envelope Size: C6
  • Paper Weight: 90gsm for a professional feel
  • Convenient Closure: Self-seal – no moistening needed
£2.64
£2.20 ex. VAT
£2.20
£2.64 inc. VAT
£2.64
£2.20 ex. VAT
£2.20
£2.64 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Wallet Self Seal 80gsm DL White (250 Pack) KF07556

Q Connect Envelope Wallet Self Seal 80gsm DL White 250 Pack KF07556 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.
£8.98
£7.48 ex. VAT
£7.48
£8.98 inc. VAT
£8.98
£7.48 ex. VAT
£7.48
£8.98 inc. VAT

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Order now for dispatch today

5 Star Office Envelopes Pocket Peel/Seal 100gsm C5 White (500 Pack) 906616

5 Star Office Envelopes Pocket Peel Seal 100gsm C5 White 500 Pack 906616 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.
£15.70
£13.08 ex. VAT
£13.08
£15.70 inc. VAT
(1)
£15.70
£13.08 ex. VAT
£13.08
£15.70 inc. VAT
(1)

Order now for dispatch today

Order now for dispatch today

Value Envelope Self Seal 90gsm C5 White (500 Pack) WX3469

Value Envelope Self Seal 90gsm C5 White 500 Pack WX3469 369641 F
500
Pack
  • Size: C5 envelopes – ideal for standard correspondence.
  • Paper Quality: Made from 90gsm paper for a crisp, clean finish.
  • Convenient Closure: Features a reliable self-seal for secure mailing.
  • Pack Size: Includes 500 envelopes for exceptional value.
£22.42
£18.68 ex. VAT
£18.68
£22.42 inc. VAT
£22.42
£18.68 ex. VAT
£18.68
£22.42 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Wallet Self Seal 80gsm DL White (50 Pack) 934740

5 Star Office Envelopes Wallet Self Seal 80gsm DL White 50 Pack 934740 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
£2.93
£2.44 ex. VAT
£2.44
£2.93 inc. VAT
£2.93
£2.44 ex. VAT
£2.44
£2.93 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Wallet Self Seal 80gsm DL White (1000 Pack) B90024

5 Star Office Envelopes Wallet Self Seal 80gsm DL White 1000 Pack B90024 112729 F
1000
Pack
  • Pack Size: 1000 white, DL size (220x110mm) envelopes
  • Self-Seal Closure: Saves time and effort with a reliable closure.
  • Wallet Opening: Opens along the longer side for easy access.
  • Trusted Brand: Part of the renowned 5 Star Office range.
£18.39
£15.32 ex. VAT
£15.32
£18.39 inc. VAT
£18.39
£15.32 ex. VAT
£15.32
£18.39 inc. VAT

Order now for dispatch today

Order now for dispatch today

Value Envelopes Self Seal 90gsm C4 White (250 Pack) WX3499

Value Envelopes Self Seal 90gsm C4 White 250 Pack WX3499 199658 F
250
Pack
  • Pack Size: 250 white C4 envelopes
  • Self-Seal Closure: No licking needed for secure mailing
  • Paper Weight: Made from durable 90gsm paper
  • Ideal For: Professional business correspondence & invoices
£21.09
£17.57 ex. VAT
£17.57
£21.09 inc. VAT
(1)
£21.09
£17.57 ex. VAT
£17.57
£21.09 inc. VAT
(1)

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Plain Wallet Self Seal 80gsm DL White (1000 Pack) KF3454

Q Connect Envelopes Plain Wallet Self Seal 80gsm DL White 1000 Pack KF3454 123166 F
1000
Pack
  • Pack Size: 1000 envelopes per pack
  • Paper Weight: Made from 80gsm paper for reliable use
  • Size: DL size, fits A4/A5 folded sheets
  • Closure Type: Features a convenient self-seal closure
£21.13
£17.61 ex. VAT
£17.61
£21.13 inc. VAT
£21.13
£17.61 ex. VAT
£17.61
£21.13 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Plain Wallet Peel and Seal 100gsm DL White (500 Pack) KF02951

Q Connect Envelopes Plain Wallet Peel and Seal 100gsm DL White 500 Pack KF02951 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
£18.59
£15.49 ex. VAT
£15.49
£18.59 inc. VAT
£18.59
£15.49 ex. VAT
£15.49
£18.59 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Pocket Self Seal 115gsm C5 Manilla (250 Pack) KF3442

Q Connect Envelopes Pocket Self Seal 115gsm C5 Manilla 250 Pack KF3442 106513 F
250
Pack
  • Pack Size: 250 manilla envelopes
  • Paper Weight: Durable 115gsm paper
  • Size: C5, fits A4 folded or A5 unfolded
  • Closure: Convenient self-seal for secure mailing
£13.44
£11.20 ex. VAT
£11.20
£13.44 inc. VAT
£13.44
£11.20 ex. VAT
£11.20
£13.44 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Value Envelope Pocket Self Seal 100gsm C5 White (500 Pack) 553241

5 Star Value Envelope Pocket Self Seal 100gsm C5 White 500 Pack 553241 889366 F
500
Pack
  • Size: C5
  • Quantity: 500 envelopes per pack
  • Convenient: Self-seal closure for easy use
  • Easy Access: Pocket opening design
£14.31
£11.92 ex. VAT
£11.92
£14.31 inc. VAT
£14.31
£11.92 ex. VAT
£11.92
£14.31 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Self Seal 90gsm C4 White (25 Pack) 934758

5 Star Office Envelopes Pocket Self Seal 90gsm C4 White 25 Pack 934758 409081 F
25
Pack
  • Size: C4 (324x229mm) - Ideal for standard documents
  • Quantity: 25 high-quality envelopes per pack
  • Self-Seal Closure: No need for moistening or tape for easy sealing
  • Pocket Opening: Allows quick and easy access to contents
£2.26
£1.88 ex. VAT
£1.88
£2.26 inc. VAT
£2.26
£1.88 ex. VAT
£1.88
£2.26 inc. VAT

Order now for dispatch today

Order now for dispatch today

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

5 Star Value Envelope Pocket Self Seal 90gsm C5 White (500 Pack) 638574

5 Star Value Envelope Pocket Self Seal 90gsm C5 White 500 Pack 638574 889015 F
500
Pack
  • Pack Size: 500 envelopes
  • Envelope Size: C5
  • Closure Type: Self Seal
  • Opening: Pocket (opens on short side)
£14.69
£12.24 ex. VAT
£12.24
£14.69 inc. VAT
£14.69
£12.24 ex. VAT
£12.24
£14.69 inc. VAT

Order now for dispatch today

Order now for dispatch today

Value Envelope Self Seal 75gsm C5 Manilla (500 Pack) WX3516

Value Envelope Self Seal 75gsm C5 Manilla 500 Pack WX3516 242498 F
500
Pack
  • Pack Size: 500 self-seal manilla envelopes
  • Envelope Size: C5 – fits A5 & folded A4
  • Material: Durable 75gsm Manilla
  • Closure Type: Convenient Self-Seal – no licking needed!
£19.97
£16.64 ex. VAT
£16.64
£19.97 inc. VAT
£19.97
£16.64 ex. VAT
£16.64
£19.97 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Wallet Self Seal 90gsm DL White (1000 Pack) KF3480

Q Connect Envelopes Wallet Self Seal 90gsm DL White 1000 Pack KF3480 101410 F
1000
Pack
  • Suitable for DL size mail (A4/A5 folded)
  • Self-seal closure for secure mailing
  • Made from high-quality 90gsm white paper
  • Pack of 1000 envelopes
£22.95
£19.12 ex. VAT
£19.12
£22.95 inc. VAT
£22.95
£19.12 ex. VAT
£19.12
£22.95 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Gusset 25mm Peel and Seal 115gsm C4 Manilla (125 Pack) 906527

5 Star Office Envelopes Gusset 25mm Peel and Seal 115gsm C4 Manilla 125 Pack 906527 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
£18.96
£15.80 ex. VAT
£15.80
£18.96 inc. VAT
£18.96
£15.80 ex. VAT
£15.80
£18.96 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelope Wallet Self Seal 90gsm C6 White (1000 Pack) KF3472

Q Connect Envelope Wallet Self Seal 90gsm C6 White 1000 Pack KF3472 126705 F
1000
Pack
  • Pack Size: 1000 self-seal envelopes
  • Document Size: Suitable for A6 or folded A5
  • Paper Weight: 90gsm white paper stock
  • Closure Type: Secure self-seal fastening
£24.48
£20.40 ex. VAT
£20.40
£24.48 inc. VAT
£24.48
£20.40 ex. VAT
£20.40
£24.48 inc. VAT

Order now for dispatch today

Order now for dispatch today

Q-Connect Envelopes Pocket Self Seal 100gsm C5 White (500 Pack) KF97367

Q Connect Envelopes Pocket Self Seal 100gsm C5 White 500 Pack KF97367 147783 F
500
Pack
  • Pack Size: 500 envelopes per pack
  • Paper Quality: Made from 100gsm white paper
  • Size Compatibility: Fits A4 (folded) or A5 (unfolded) sheets
  • Closure Type: Features a convenient self-seal closure
£19.37
£16.14 ex. VAT
£16.14
£19.37 inc. VAT
£19.37
£16.14 ex. VAT
£16.14
£19.37 inc. VAT

Order now for dispatch today

Order now for dispatch today

5 Star Office Envelopes Pocket Peel and Seal 100gsm C4 White (250 Pack) 906632

5 Star Office Envelopes Pocket Peel and Seal 100gsm C4 White 250 Pack 906632 118079 F
250
Pack
  • Size: C4 (324x229mm) - Ideal for standard documents.
  • Peel and Seal Closure - Quick, convenient and hygienic.
  • Pocket Opening - Easy document insertion/removal.
  • Pack of 250 Envelopes - Reliable 100gsm paper.
£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

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?