Lancaster University Management School | 19,197 followers on LinkedIn. Lancaster University Management School (LUMS) is a quadruple-accredited, world-ranked Management School. | Lancaster University Management School is one of the few business schools in the world to hold triple accreditation, in recognition of the quality of everything we do from the most influential business school accreditation bodies (AACSB, EQUIS, and the Association of MBAs). LUMS is also accredited by the Small Business Charter. As an established and ambitious international Management School, research is at the heart of our success and informs our teaching, pushes boundaries and transforms lives.