The 'Source' convention
When you post codes, each and every time please note the 'source' of these codes and the fact that they can be used by all (if they cannot be used by all, but just a closed user group ( then unless that is a large group e.g. only NHS workers, in which case state this explicity) then don't post it.
If someone has not put the source, please do not use them. You could be committing fraud. Firms are becoming more sensitive to misuse of their vouchers.
The best thing to do is question the poster over the source. If no reasoned answer is forthcoming, either ignore the post, or better still report it to the Abuse Controller.
Wirm - can't remember where the code came from, but its widely available. Okey Dokey!
Tax cuts and Universal Credit changes
Updated with November NI changes
Eg, 9p crisps