The authorized biography of Muggeridge by his friend Richard Ingrams revealed that he had been suffering from Alzheimer's Disease for several years before his death and had been almost completely unable to write after the start of the 1980s.
His father was prominent in the founding of the Labour Party in Britain.
Proofread the original draft of the novel "1984" for George Orwell.
Grandfather of graphic designer Fraser Muggeridge.