John Michael was the pseudonym of Ernest John D'Oyly Inglis (1899– ?). He wrote a pair of books set in India (possibly in what is now Pakistan –I have not read either book so cannot check). Both feature racing. Meena Khorana in The Indian Subcontinent in Literature for Children and Young People describes his Chokra and Tags as as 'carefully-structured, action-packed story', but finds that despite its Indianised hero, it is 'thoroughly colonial and Eurocentric'. The book sees Mahatma Gandhi and his struggle for freedom for India as a political nuisance.
Finding the books
Chokra isn’t outstandingly common, and pricing does vary. Chokra and Tags is tricky.
Links and sources
Meena Khorana: The Indian Subcontinent in Literature for Children and Young People
The British Library
Thanks to Lisa Catz for the photograph and summary