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Next Day Delivery
Large Stock
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Multicolour envelope
We will be closing for a short break over the Christmas period from midday 22nd December to 2nd January Please note that due to heavy demands during December we cannot guarantee next day delivery

Envelopes by Size

We have nearly all envelopes sizes right here! Including A3, A4, B4, B6, C3, C4, C5, C6, DL and Square Envelopes. We have oversized, undersized and gusset variants of each size of envelope. Within each size category we have a huge range of mailing and office suitable envelopes, including inkjetable ones. Also we have many different colours, just find the required size and browse through thousands of envelopes! If you still cant find the one you are looking for try the advanced search above or give us a ring we are more than happy to help! - Call Us Here

Not sure of the type you require? Try our handy envelope size guide.

A3 Envelopes

A3 Envelopes

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A3+ Envelopes

A3+ Envelopes

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American A4 Envelopes

American A4 Envelopes

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B4 Envelopes

B4 Envelopes

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B4 Gusset Envelopes

B4 Gusset Envelopes

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B6 Envelopes

B6 Envelopes

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C2 Envelopes

C2 Envelopes

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C3 Envelopes

C3 Envelopes

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C3 Gusset Envelopes

C3 Gusset Envelopes

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C3+ Envelopes

C3+ Envelopes

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C4 Envelopes

C4 Envelopes

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C4+ Envelopes

C4+ Envelopes

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C4 Gusset Envelopes

C4 Gusset Envelopes

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C5 Envelopes

C5 Envelopes

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C5+ Envelopes

C5+ Envelopes

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C5++ Envelopes

C5++ Envelopes

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C5 Gusset Envelopes

C5 Gusset Envelopes

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C6 Envelopes

C6 Envelopes

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C6 Wallet (126 x 168mm)

C6 Wallet (126 x 168mm)

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DL Envelopes

DL Envelopes

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Dl+ Envelopes

Dl+ Envelopes

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DL++ Envelopes

DL++ Envelopes

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Other Envelopes

Other Envelopes

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Square (100mm) Envelopes

Square (100mm) Envelopes

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Square (111mm) Envelopes

Square (111mm) Envelopes

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Square (120mm) Envelopes

Square (120mm) Envelopes

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Square (125mm) Envelopes

Square (125mm) Envelopes

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Square (130mm) Envelopes

Square (130mm) Envelopes

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Square (140mm) Envelopes

Square (140mm) Envelopes

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Square (146mm) Envelopes

Square (146mm) Envelopes

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Square (155mm) Envelopes

Square (155mm) Envelopes

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Square (160mm) Envelopes

Square (160mm) Envelopes

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Square (165mm) Envelopes

Square (165mm) Envelopes

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Square (170mm) Envelopes

Square (170mm) Envelopes

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Square (190mm) Envelopes

Square (190mm) Envelopes

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Square (195mm) Envelopes

Square (195mm) Envelopes

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Square (200mm) Envelopes

Square (200mm) Envelopes

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Square (205mm) Envelopes

Square (205mm) Envelopes

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Square (220mm) Envelopes

Square (220mm) Envelopes

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Square (230mm) Envelopes

Square (230mm) Envelopes

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Square (240mm) Envelopes

Square (240mm) Envelopes

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Square (270mm) Envelopes

Square (270mm) Envelopes

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Square (300mm) Envelopes

Square (300mm) Envelopes

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Square (330mm) Envelopes

Square (330mm) Envelopes

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Square (340mm) Envelopes

Square (340mm) Envelopes

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Why Choose Express Envelopes?

Express Envelopes are a premier online retailer of envelopes and copier paper with a huge range of over 1000 stock items. Order before 2pm you'll have it the next business day (excludes small packs and samples) , it's as simple as that.
Low Prices
Next Day Delivery
Large Stock

Express Envelopes is rated 4.80 stars by Reviews.co.uk based on 56 merchant reviews

4.80 / 5 Rating
56 Reviews
There was a delay in receiving the envelopes from Express, but once I phoned and spoke to the lovely lady, she helped me out. In fact, the carrier had delivered them to the wrong address but the lady at express sorted it all out for me. Thank you Marie!
Very good quality self-seal product - delivered before 10.30 am the next day. excellent service, Thanks, David
I had a last minute invitation to send out. Express Envelopes had the right envelope for the job and they arrived next day. Perfect.