Problem on posting to BX9 1AS

I cannot find this postcode when I want to purchase the postage online. What can I do?

Hi, BX9 1AS is an artificial post code and it is not on the Royal Mail database. Letters received at BX19 1AS are opened, scanned and distributed to other HRMC offices. Gov.uk website says that for couriers a physical address should be used. Check https://www.gov.uk/government/organisations/hm-revenue-customs/contact/couriers Hope it helps

Hi Phoebe Chan,

There is also a link at the bottom for 'Couriers' and you can use the address shown there.
Courier deliveries to HMRC: PO box and BX postcodes

Thank you.