Mr Simister joined Tesco's UK marketing team in 1996. He has been involved with Central European subsidiaries since 2005, as former trade director for the Czech Republic and Slovakia, and as food trade, purchasing and supply chain manager at Group level for food products. In 2005, he returned to the UK to lead the transformation of the local food business. In April 2017, he was appointed Central European CEO and has since been responsible for all Tesco operations in the Czech Republic, Hungary, Slovakia and Poland. At the same time, he became a member of the Tesco Executive Committee.