Letters, Large Letters & Small Parcels

Letters, Large Letters & Small Parcels

Mail posted to the UK is first categorised as a Letter, Large Letter or Small Parcel, and then weighed to find the postage rate.

Letters, Large Letters & Small Parcels


C5+ envelope or smaller - up to 100g - up to 5mm thickness.

For example:

Letter Dimensions

Large Letters

C4+ or under - up to 750g – up to 25mm.

For example:Large Letter Dimensions

Small Parcels

Items over 353mm x 250mm x 25mm 
Up to 610mm x 460mm x 460mm - max weight 20kg

Maximum Packet Dimensions

Ideal for sending:


The maximum amount payable using the above services in the case of loss or damage is £20.00.

Postage Calculator

Use our handy postage calculator to find out the cost of posting your item.

Services Finder

Find your local Post Office services and locations nearest to you

Certificate of Posting

You can obtain a Certificate of Posting free of charge when sending your item from any post office. This provides proof of posting, and is necessary should you wish to claim compensation for your item.

For increased compensation, signature on delivery and tracking, see our Signed For or Special Delivery services. Heavier mail can be posted using our Parcel services.

For more information contact our customer services team on 01624 664664 or download our price guide below.

Marketplace Seller?

If you are a marketplace seller, you can now use our online mail and parcel dispatch solution, Click and Dispatch, to manage your shipping requirements including purchasing postage, printing labels, storing and managing addresses, submitting online customs declarations and much more.

To find out more and to download our account application form please visit the Click and Dispatch page.

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