Royal Mail Post and Go Stamps

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Trace Royal Mail Post & Go Stamps

Look at the image of the Post and Go faststamp below and you see we have highlighted the first six numbers of the stamp overprint code. These six numbers identify the location where a Post & Go stamp was issued. To check where a Post and Go stamp was issued enter the six numbers on your stamp in the box on the right.

Post and Go stamp location code

What do the other Post & Go numbers mean?

The number following the location identifier (1 in the above example) is the machine number (sometimes referred to as Kiosk). Some Post & Go locations have multiple machines and this part of the code enables collectors to identify the specific machine that issued a stamp.

The next number between the hyphens (12405 in the above example) is called the session number. This number increases over time and represents the machine usage sessions by customers (regardless of the number of items they purchase within a specific session).

The last number can reach a maximum of 99 and represents the item number vended during a specific user session. In the above example the number is 14 meaning it was the 14th stamp issued in the user session.


  • Post & Go machines issue a new generation of self-adhesive British postage stamps that are rapidly capturing the interest of stamp collectors. They are currently available from nearly 150 fixed locations in the UK which have Post and Go machines plus a few additional mobile and philatelic identification numbers used at exhibitions etc.

    While we wont be providing the basic information about Post & Go stamp issues - as that is available from existing philatelic blogs and websites - we do plan to develop useful tools and other resources to help collectors identify, catalogue and write up their Post & Go stamp collection.