Secure Data Exchange Service (SDES)
Find out about or sign up to the SDES service.
Support.SDES@hmrc.gov.uk
Phone
Phone HMRC if you to want to find out about, or sign up to SDES service.
Telephone:
03000 597 222
Outside UK:
+44 3000 597 222
Opening times:
9:00am to 5:30pm: Monday to Friday