A riot of nonsense and adventure, may well become a classic in the great English nonsense tradition

Joyously surreal, set in landscapes full of toffee, deferential choirs of badgers, heavenly water-slides and velvet chairs . . . Their pachydermous protagonist governs a benevolent plutocracy- but the books' great joy is the frequent sly and subtle lampooning of his capitalist pomp

The books are very funny, installing a large cast of unlikely characters . . . in a world of mildly squiffy logic . . . And the illustrations are among Quentin Blake’s best work, scrawls and splotches that finally and unarguably distil character. But most important, this is political satire of a high order — Animal Farm for pre-teens, but wittier and more relevant to our own world

If there was ever a children's series generating fanatical, "cult" adoration, this is it. And deservedly so.

Few books are laugh-out-loud funny; fewer still are the children's books that have you stifling titters on the train . . . Uncle is a brilliantly sustained exercise in nonsense, played with the straightest of faces

Would make a great gift for literary eccentrics of any age

I think Uncle stuck with me because of its combination of excess, gadgetry and eccentricity - all of which are modes of being I have attempted to emulate in my adult life. I blame J.P. Martin

You ask any class "Who's heard of Alice in Wonderland" and up goes a forest of hands. Uncle is on the same level and should be more widely read and enjoyed

[This] beautifully illustrated picture book contains a moving message about love, loss and learning to accept change

Selected in Time Out's 100 best children's books