30/11/2010 GMT

Justice is often depicted as blind, free of bias and prejudice.
But how often does reality match the ideal?

Courtenay Griffiths is a respected British barrister who says he relishes defending clients regarded by others as indefensible.

He is currently representing Liberia's former president, Charles Taylor, in his war crimes trial in the Hague.

Stephen Sackur asks him how a leading defence lawyer navigates the complex waters of legal principle and personal morality.