A month after his win at Newmarket, Bahram started 5/4 favourite for the Derby at Epsom. The race was run in bright sunshine, despite previous heavy rain, and was attended by a crowd estimated at 500,000 including King George V who was celebrating his Silver Jubilee. Bahram was towards the rear of the field in the early stages but was always travelling well. Fox moved him up to third place at Tattenham corner before accelerating into the lead early in the straight. He won very comfortably by two lengths from Robin Goodfellow and Field Trial, with Theft in fourth. Later in June, Bahram started at odds of 1/8 in the St. James's Palace Stakes at Royal Ascot and won from Portfolio. In August, Bahram's training was delayed by the "coughing epidemic" which struck many British stables in late summer.