UPDATE 28/11/2014, 1808: The University of East Anglia's student union today overturned a decision to cancel an event involving a UKIP parliamentary candidate after claims it had restricted freedom of speech.

In a statement on Facebook, the union said that the politics society could hold an event with members of UKIP, on the condition that there was another speaker who provided an alternative view.

"The principal regulatory step additional to those already identified is taken to require that the event includes clear debate and challenge to the views of the external speaker via an opposing speaker chosen on the basis of robust and fair challenge," the statement said.

A counter-petition on change.org gained 320 supporters overnight and called on the union to allow UKIP to speak on the campus "for the simple sake of fair and just democracy".