Lancaster University Students'​ Union | 3,758 followers on LinkedIn. Lancaster University Students'​ Union (LUSU) is all about providing support and representation for the students of Lancaster University. We're here to fight their corner to ensure they get the best possible experience out of their time at Lancaster. Lancaster University Students'​ Union has a strong environmental and ethical track record This has been recognised by the Union being awarded the Gold Standard by the NUS in the Green Impact Awards.