Teachers at a college in south-west London have begun a week-long strike against plans to "fire-and-rehire" staff to reduce their holiday allowance.
Members of the University and College Union (UCU) at Richmond upon Thames College are set to walk out from 23-28 May.
The union said "deplorable" contract changes could affect 127 teachers.
The college said it was a "worst-case scenario" for their 3,600 students.
