The Budget notes say (page 246) that:
Transfer of Assets Abroad
27. Anti-avoidance legislation designed to prevent individuals from avoiding
income tax by transferring assets abroad will be amended to ensure these
anti-avoidance provisions apply to non domiciled individuals. The
remittance basis will apply to remittance basis users.
This is a massive change. It effectively says that once a non-domiciled person is resident here they can no longer set up non-resident trusts to avoid UK tax.
Very good news!