How do I know postal documents have been received and are being processed

I sent an AP1 and a TR by post for property deed title YEA65858 and would like to know if it has been received please. I posted it Tuesday 1 April 25. Thanks

Ian - nothing received I'm afraid. If the application is received then you would get an acknowledgement in return. I'd suggest you resubmit as appropriate
YEA65858

Is there anyway you could recheck as it was sent with the appropriate fee and ID documents! Thanks

It was sent to the Citizen Centre Bilston. Thanks

Ian - I have checked our live systems and nothing recorded as being received
If you want a deeper investigation re missing delivery then you can contact the support team - Public guidance: dealing with land and property - GOV.UK

Thanks. Any chance it’s not in a backlog and not  yet registered as received?

Ian - the backlog only includes applications as received. There's no backlog of received applications waiting to be captured in our systems ready for processing.
Unfortunately, as with any postal delivery, items may not always reach us.
I'd perhaps check to see if the registration fee has bene cleared
But if you believe it has and that there maybe an issue then please use the contact form as linked to