Oxford University Braces for Attacks by Animal Rights Extremists

Police warn university that attacks are inevitable; staffers focus on hiding their identities

"It is also imperative that legitimate guests after midnight are signed in, and out if they leave.

"We have no interest in what students do in their private life and we simply need to know that anyone who is in the college at night has a student taking responsibility for them."

Many colleges have a signing-in system, but it is not always rigorously enforced.