What is the duration of the post-study work permit (PSW) in the UK for one-year and one-and-a-half-year programs?

The post-study work duration depends on the qualification completed, not whether the course was 1 year or 1.5 years. For eligible Master’s graduates, the Graduate Route currently gives 2 years of stay-back rights (expected to reduce to 18 months for new applicants from 01 January 2027 onward).