|British Empire and Commonwealth Games|
|1962 Perth||Double Sculls|
Birkmyre was born at Cranleigh, Surrey, and was educated at Radley College. He became a member of Bristol Ariel Rowing Club. In 1959, partnering George Justicz, he was runner up at the Double Sculls Challenge Cup at Henley Royal Regatta. In 1960 the pair won the Double Sculls Challenge Cup and went on to compete in the double sculls at the 1960 Summer Olympics in Rome. Birkmyre and Justicz won the Double Sculls at Henley again in 1961 and won a silver medal at the European Championships. They then joined Leander Club and in 1962 won the Double Sculls at Henley, came fifth in the World Championships and won a gold medal at the 1962 British Empire and Commonwealth Games. They made their final winning appearance in the Double Sculls at Henley 1964.