I bought these stamps a few months ago from the Post Office in September 2023 after they told me that the old stamps were no longer being accepted. I've now read on the website that they won't accept any 'unbarcoded stamps'. Unless I'm missing something these ones don't have barcodes either! I'm really confused.
I'm posting something that I don't want to risk going missing because I've used the wrong stamp. Hope someone can help.