The Counter-Terrorism and Security Act 2015 includes a duty on many types of institutions, including universities, to “have due regard to the need to prevent people from being drawn into terrorism”. This is also known as the Prevent duty. In fulfilling this duty, the College must have regard to statutory guidance issued by the Home Secretary:
https://www.gov.uk/government/publications/prevent-duty-guidance
The College is required to have arrangements in place for assessing the risks around particular events and speakers and for managing those risks, while protecting freedom of speech within the law and academic freedom. The Organiser1 must answer the following questions in order to assist the College in making this assessment in relation to your request.
Footnote
1Organiser: the person making the arrangements for the event to take place, in terms of speakers, booking of facilities and publicity. Where these roles are shared the person arranging the speakers is deemed to be the Organiser.