Is it true that the UK has reduced the post-study work visa duration from two years to eighteen months for a Master's/PhD?

Yes, this is correct. From 1 January 2027, the UK will reduce the post-study work visa (Graduate Route) duration for bachelor's and master's graduates from two years to eighteen months.

If you apply on or before 31 December 2026, you can still receive the full two-year PSW (post-study work visa). PhD graduates will continue to get a three-year PSW regardless of when they apply.

Visa rules are subject to change.