Tens of thousands of staff at 150 universities across the UK are striking again in February and March.
The action is being taken over pay, working conditions and pension cuts.
Eighteen strike days between February and March have been announced by the University and College Union (UCU). It said exact dates would be confirmed soon.
The union also said it would re-ballot staff at all 150 universities. That could see the dispute extend well into 2023 if the support for strikes continues.
Academic staff and those in other professional roles including administrators, librarians and technicians are taking part.
Staff walked out on three strike days in November, and some universities also took part in strike action earlier in 2022 and in 2021.
That also included industrial action short of a strike, such as not covering for absent colleagues, refusing to make up for work lost to strike action and working to rule.
