UK universities have offered bonuses and promises of better contracts to staff taking part in marking boycotts but some fear local settlements to the disputes risk leaving the sector fragmented.
Since academics at 19 institutions pledged to refuse to grade essays and exams from 23 May, deals have been struck at the universities of Nottingham, Sheffield and Sussex, as well as Newcastle and Ulster universities.
Other University and College Union branches, including at the University of Leeds, are considering whether to accept offers from management, while Durham University did not start the boycott as planned after agreeing a local deal.