Hon. Lady Justice Philomena Mbete Mwilu is an advocate of the High Court with over 32 years experience in the legal profession. She holds a Bachelor of Laws (LLB) degree from the University of Nairobi and was admitted as an advocate of the High Court of Kenya in 1984. She practised law in the firms of Muthoga Gaturu & Company and later Mutunga & Company Advocates. She thereafter worked as a senior legal manager at Jubilee Insurance Company, served as the Board secretary at the Electricity Regulatory Board, the Deputy Chairperson of the Energy Tribunal, and Director on the Board of Nairobi Water and Sewerage Company before being appointed a Judge of the High Court in 2007. Lady Justice Mwilu first served in the Commercial Division in Nairobi and later the High Court in Eldoret. She was later transferred to Nairobi where she served at the Criminal Division and subsequently headed the Environment and Land Division of the High Court. In December 2012 Lady Justice Mwilu was elevated to the Court of Appeal where she served as a Judge of Appeal until her appointment as the Deputy Chief Justice. She took the Oath of Office as the Deputy Chief Justice on October 28, 2016.