After a review, Peer2Peer closed in December 2019. There are many other mental health resources available in Cambridge. We've picked out some of the relevant links below.
University Counselling Service (Self-help resources)
Student Advice Service (Exams)
Disability Resource Centre - a service which offers a range of support to students with mental health conditions, including specialist mentoring (over 6000 hours of support this year, with highly positive student feedback). CUSU Advice