Complex sentence: Williamson studied architecture at the City of Leicester Polytechnic School of Architecture (now De Montford University) where he met and collaborated with his current business partners Andrew Weston and Steve Humphreys and developed an interest in low energy, sustainable buildings.
Split into simpler sentences: Williamson studied architecture at the City of Leicester Polytechnic School of Architecture (now known as De Montford University) where he met and collaborated with his current business partners Andrew Weston and Steve Humphreys. It was at Leicester that he developed an interest in low energy, sustainable buildings.