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Advice guides

Royal Mail Postal Changes – October 2014

Royal Mail introduced changes to their service in October 2014.
To make thing simpler there is only one format for small parcels, which has a maximum height of 160mm.
We have put together a guide designed to offer you insights into which of our products are most suitable for your use.

Royal Mail

If you are currently sending less than 1000 parcels per year the following rates now apply.



Large letter

Small parcel

Medium parcel

Maximum length 240mm 353mm 450mm 610mm
Maximum width 165mm 250mm 350mm 460mm
Maximum height 5mm 25mm 160mm 460mm
Maximum weight 100g 750g 2kg 20kg
Large parcels

Large parcels will need to be sent via Parcelforce or another courier.

Postal tubes
Royal Mail has also introduced changes to the way rolled and cylinder shaped items can be posted. In order to be classed as a small parcel the following dimensions apply to postal tubes: Weight 2kg / Length 450mm / Diameter 80mm.

Royal Mail 24/48

Previously known as Packetpost the Royal Mail 24/48 service offers anybody sending over 1000 parcels the opportunity to send letters or packets within the following size limits:


Large letter

Medium Parcel

Maximum length 353mm 610mm
Maximum width 250mm 460mm
Maximum height 25mm 460mm

The Royal Mail 24/48 service combines the letter and large letter category into one and also combines the small and medium sized parcels into one category; Royal Mail 24/48 also considers the weight of the items.

» 24 hour next day delivery (weight limit 20kg)
» 2-3 working days delivery (weight limit 2kg)
» Large letters sent by Royal Mail 24 and 48 have a weight limit of 750gm

With Rajapack’s handy guide and our box selector and bag selector tools, you can select from a whole range of products just by searching on the dimensions you need to accommodate. Alternatively you can browse our full range of postal packaging.