Students have been warned they could be "risking their futures" if they don't adhere to coronavirus restrictions amid a number of "unacceptable"large gatherings on campus led to some people being arrested.
University of Reading vice chancellor Professor Robert Van de Noort made the stark warning and heavily criticised students' "irresponsible" behaviour during a pandemic that has cost "thousands of lives".
A series of tweets from the university revealed the gatherings have been attended by the on-site security and, in some cases, Thames Valley Police.
The university has confirmed some students have even been arrested.
A tweet said: "This type of behaviour is wholly unacceptable. It puts everyone at risk: students, the local community, and staff, including our security team, who are doing important work to keep us all safe."
Reading is currently in the "medium" alert tier, which means it has the lowest restrictions in the three-tier system introduced by the Government.
Pubs and bars have to shut at 10pm and people have to follow the rule of six if meeting indoors or outdoors.
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Prof Van de Noort said in a video message: "I am very disappointed to see that some of the Reading students have been behaving in an irresponsible way, ignoring the clear rule of six.
"Let me be clear, this kind of behaviour in the middle of a pandemic that has cost thousands of lives is completely unacceptable.
"I understand that you are frustrated with the restrictions on our lives, we all are. But everyone has a role to play to prevent this latest outbreak from getting worse.
"I am proud of most of our students who I know are acting with great care and compassion for others. For those who are not or think that they can break the rules, I say please think again.
"Think of your neighbours, your friends and your family. You are causing them great worry and your actions could be putting other people's lives in danger.
He stressed not obeying the rules is breaking the law and meant students "could be in trouble with the police".
He added: "You are putting your future at the University of Reading at risk. Please be responsible and do your bit to help stop this pandemic."
Reading saw 23 new cases on Wednesday, October 14 and now has recorded more than 1,000 cases since the start of the pandemic.
The figures for Berkshire can be found here.
