Secure Data Exchange Service (SDES): enquiries
Call or email HMRC for help with the 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
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Updates to this page
Published 14 May 2025