You will notice that everyone bar me, blames Royal Mail for the unfortunate position you find yourself.
I would be willing to bet a pound to a penny that the fault lies with DVLA � invariably when I deal with incompetent governmental organisations, a high proportion of letters go missing in the post.
Contrast this with my credit card statements � in all the years I have been paying my monthly account, I cannot recall a single statement or cheque I have sent, going missing (I would have remember it, because I would have paid interest charges).