Hello,

Have you been on the royal mail website?? When we have had things go missing in the past we have had to download a form, fill it in and send it off, then a cheque would come for the lost contents and the postage back on the item.

Police probably will not be interested as you can not prove that it was a royal mail person or a member of the public, whom opened the letter, luckily for you, you have a friendly person living near you who brought your letter to your door.

Kell