The Turnbull guidance or the 'Internal Control: Guidance to Directors' sets out best practice on internal control for UK listed companies, and assists them in applying section C.2 of the UK Corporate Governance Code.
The guidance was originally published in 1999. In 2004 the FRC set up a group chaired by Douglas Flint (then Group Finance Director, HSBC Holdings plc) to review the guidance and update it where necessary, in the light of experience in implementing the guidance and developments in the UK and internationally since 1999.