beta This part of GOV.UK is being rebuilt – find out what beta means

HMRC internal manual

Inheritance Tax Manual

Communications: Inter-departmental mail

Internal mail is delivered by TNT to other offices within HMRC

You must use this service where the correspondence is addressed to any HMRC office in Great Britain. The address should include:

  • the name of the person or business unit the correspondence is to go to
  • the name of the relevant department or office, and
  • the full address of the building, including the post code

The post must be placed in a polylope. You can find guidance in the Postal Services section of the HMRC intranet.