The SNOMED CT international releases are distributed by SNOMED International.
The UK make the international edition of SNOMED CT RF2, as well as the converted edition of SNOMED CT RF1, available in the UK SNOMED CT Clinical Edition RF1 and RF2 releases, and can be found here.
If you are deploying SNOMED CT outside of the UK please contact your National Release Centre or register and request a copy of this release from SNOMED International.