My Self-Assessment sent by post may be lost by Royal Mail

Hello, I have posted my self-assessment from abroad to the UK by post. As per tracking by Royal Mail, it was at a UK sorting office and due to be delivered "today" - which was 8 days ago. Is there an email address for HMRC I could contact so that they confirm if they have actually received or not. The letter was sent on a signed for basis. Thank you. Alya

Hi,

To confirm receipt you would need to contact our Self Assessment team.

Self Assessment: general enquiries

Thank you.