I submitted my application on 14th March, sent the passport back on 15th via Royal Mail signed for. It only updated to say it had been delivered on 30th March. After speaking with Royal Mail they said it would have been delivered by 16th but it does get recorded until the passport office scan it (not sure if this is true). Anyway from posting off on 15th until now, my application still says awaiting documents. I’ve called numerous times and each time I’m told to just wait a bit longer. It is so frustrating.