Read this and answer the question. If the question is unanswerable, say "unanswerable".

Non-academic alumni: Author, H. G. Wells, McLaren and Ferrari Chief Designer, Nicholas Tombazis, CEO of Rolls Royce, Ralph Robins, rock band Queen, Brian May, CEO of Singapore Airlines, Chew Choon Seng, Prime Minister of New Zealand, Julius Vogel, Prime Minister of India, Rajiv Gandhi, Deputy Prime Minister of Singapore, Teo Chee Hean, Chief Medical Officer for England, Sir Liam Donaldson, Head Physician to the Queen, Huw Thomas, CEO of Moonfruit, Wendy Tan White, Businessman and philanthropist, Winston Wong, billionaire hedge fund manager Alan Howard.

Who's doctor is an honorary graduate?
unanswerable