CLC lobbies the UK governments and the EU on behalf of the charity sector on tax and other legislative issues, provides secretariat services for charities and related organisations, and runs three All-Party Parliamentary Groups. It is understood that Corden wil work as a consultant across a number of policy areas.
"I've known CLC and its managing director Helen Donoghue for a long time," Corden said. "I've been a great admirer of how they work. I've been on the receiving end of their lobbying several times.
"I can bring an inside knowledge of the workings of government and policy making processes to the way they work."
Corden has worked with the voluntary sector in a number of civil service roles since the 1980s, including posts at the Charity Commission and the Office of the Third Sector under the Labour government.
He joined the Commission for the Compact as interim chief executive in 2007 and continued to run it until it was shut down earlier this year, alongside a number of other non-departmental public bodies working with the third sector.