The Nairn-Anderson thesis was a thorough waste of time, being in fact just a fancy version of Harold Wilson's sleight-of-hand trick when he distracted the left from the case for socialism by re-directing them to the case for modernising Britain, displacing the struggle against the capitalist class with a struggle against the aristocracy, represented by Alex Douglas-Home. ('Why should you vote for the thirteenth Lord Home?' Wilson demanded, and Home replied, 'why should you vote for the thirteenth mr wilson?'). The Nairn-Anderson thesis effectively redirected the left towards a critique of a supposedly unique English pre-modern governing culture. The true successor of the Nairn-Anderson programme, of course, was Margaret Thatcher's struggle against both the Tory Grandees and the 'Trade Union Barons'.
What Anderson was very good at was the grand survey of the state of the world.
What he is not very good at is China and Russia, where he is led mostly by the most backward 'dissident' intelligentsia, who have an abiding contempt for the masses, and national sovereignty.