The postal charging changes came into effect from 21 August 2006. You should have received details of the new sizing guide direct from the post office.

Gone are the days of putting a single sheet of A4 into an A4 size envelope, as it will generally be cheaper to fold them to a maximum A5 size before posting, taking advantage of the small letter size rate.

The rules are relatively straightforward and you can see exactly how they work by clicking on the links below.

Internet links:

Royal Mail new pricing and sizing and Royal Mail questions and answers