Channel 4 has launched a protest against the appointment of four white board directors in a diversity row. Culture Secretary Lucy Frazer apprvoed the appointment of five new non-executive directors on Monday. Four out the five new members are white, including Dame Annette King. Channel 4’s chairman Sir Ian Cheshire was outraged by the announcement, warning the board was lagging behind its own diversity targets. In an internal memo seen by The Daily Telegraph, Cheshire said: “These appointments will improve representation on the board but do not yet meet the levels of representation throughout …