He was educated at Rugby School and Balliol College, Oxford (Modern History, 1889), and was called to the bar in 1893 at Lincoln's Inn.

Over the ensuing eight years his organisational skills, and the analytic brain of his appointee as general superintendent, Cecil Paget, effected a revolution in the company's ability to handle its heavy freight traffic expeditiously and profitably.

[5] Having impressed parliamentary committees as an expert witness, it was natural that Granet would be called upon by the government during World War I, and he was successively: controller of import restrictions; deputy director of military railways at the War Office; and director-general of movements and railways.

As at the Midland, his appointee, this time Sir Josiah Stamp as president (chairman and chief executive), was crucial in the modernisation of the company's management.

He died at Burleigh Court, near Stroud, Gloucestershire, two days before his 76th birthday, after some five years of ill health.