CSU during its early years from 1971 to 1974 received support from CCAT Students' Union as CCATSU was from the 1960s the only large NUS-affiliated, and conventionally funded, students' union in Cambridge. CSU in turn supported CCATSU in its campaigns to get more student housing provided for CCAT degree students, a serious issue for the college by the early 1970s. CCATSU and CSU went their separate ways after 1974.
