Shirley was appointed as an Independent Non-Executive member of the Deloitte UK Oversight Board in May 2020, providing oversight of the external audit business only.
In January 2021, Shirley stepped down from the UK Oversight Board and became an Audit Non-Executive member of the Deloitte Audit Governance Board upon its establishment. She has chaired the Audit Governance Board since November 2023.
Shirley was Chief Financial Officer of Henderson Group plc from 2009-2013 and is currently Chair and Audit Committee Chair of Dignity Group Holdings Limited. Previous non-Executive roles include Audit Committee Chair of Ashmore Group plc; Chair of the Audit & Risk Committee at the BBC; Chair of Royal London Asset Management; Deputy Chair and Chair of the Audit Committee at esure Group plc; and Chair of the Audit and Risk Committees at Hargreaves Lansdown plc.
Shirley graduated in Economics and Accounting from the University of Bristol and is a qualified Chartered Accountant and Corporate Treasurer.