The leak revealed the names and marks of the undergraduates who achieved the lowest scores in exams taken before Christmas.
The exams are known as 'collections'. They're used to monitor students' progress and do not form part of the final degree mark.
– Dr Anne Knowland, Senior Tutor of University College
"We can confirm that owing to a clerical error the collection marks of a small number of University College students were accidentally included in an email sent out to students on 13 January. We would like to apologise to all students affected by this inadvertent disclosure for any distress this has caused and reassure them that we are investigating exactly how this happened and are determined to make sure this does not happen again. University College takes the treatment of sensitive data very seriously."