Roderick Kidston is the author of the Iris, The Rainbow Messenger Report.

Roderick Kidston began learning astrology in 1974 at the age of thirteen from his self-taught mother. An early fan of adding asteroids to the astrologer's repertoire, he now considers it difficult to read a horoscope without the 'minor planets'. The study of harmonics has also been a passion, and for the last decade he has investigated how harmonics may explain both material evolutionary potential and the inner drives of mind and soul.

Roderick is interested in a more 'integral' approach to astrology that links with developments in depth psychology and metaphysics, including the new insights offered by the spiral dynamics theory of consciousness.