The Christian Union exists in order that every student at UCL has the opportunity to hear what the Bible calls the "good news" about the life and death of Jesus Christ. Christian students from all backgrounds, churches and countries help this to happen in a variety of ways at UCL.

This ranges from hosting parties for international students to experience British culture to screening debates between academics; and includes running talks and discussion on topics with which students can identify and meeting students one-to-one to talk about their personal beliefs.