Lewis is a practising barrister at Parkside Chambers.  He was called to the Hong Kong Bar in 2005, and worked in a public law litigation team of the Department of Justice prior to joining his current chambers.  He has hands-on experience in judicial review, election petition and other statutory applications of constitutional significance from the perspectives of both advocate and the instructing solicitor.  Lewis obtained his BBA(Law), LLB, PCLL and LLM from The University of Hong Kong, and was a Refugees Status Determination Officer of the United Nations High Commissioner for Refugees.