Freedom of information (FoI) requests by the Guardian newspaper sent to 120 universities, including the prestigious Oxford University, found that students made at least 169 such allegations against academic and non-academic staff from 2011-12 to 2016-17.
At least another 127 allegations about staff were made by fellow colleagues.
"Sexual harassment of students by staff members has reached epidemic levels in British universities. Most universities have no effective mechanism to stop staff from pressuring students into sexual relationships, and when it happens, any sort of disciplinary action is pretty much non-existent," Ann Olivarius, senior partner at the law firm McAllister Olivarius was quoted as saying by the newspaper.
It was followed by Nottingham University with 10, Edinburgh University with nine, University of the Arts London (UAL) and Essex with seven and Cambridge University with at least six.
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A University of Oxford spokesperson said: "A wide-ranging campaign across the university in recent years has made clear that sexual assault and harassment, whether by staff or students, will not be tolerated anywhere at Oxford."
According to the 'Guardian' analysis, Oxford University also had the most staff-on-staff allegations, with 17 recorded centrally and three by colleges - though again, there may be duplication.
Next was Cambridge University with at least seven, Portsmouth University with six, and Exeter University, York University and London School of Economics (LSE) with five each.
Of the cases disclosed in response to FoI requests, 136 staff-on-student cases were investigated by universities.
A vast majority were investigated internally and only a small number were investigated by police.
A University of Nottingham spokesperson said: "There have
been no such allegations from students, relating to university staff, in the past three years and less than 10 incidents in the two years prior to this."
"Similarly with regards (to) allegations of staff from staff there have been less than 10 allegations in the last five years. Clearly our range of initiatives and policies around this issue is helping to drive this message home," the Spokesperson said.
"We have a zero-tolerance policy regarding sexual harassment and have robust procedures in place for students and staff to report instances of sexual harassment," a spokesperson of the University of Essex said.