Not to mention that he had materially helped win the war to save the country that did that to him. He was shamelessly hounded to his death, no two ways about it.
Incidentally, there is an excellent biography of Turing, Alan Turing, The Enigma, written by Andrew Hodges, an Oxford don (who is, however, not a relative of mine, and I've never had occasion to meet him). The book is very detailed, and has an extended discussion of whether his death really was suicide or not (without being able to come to a categorical conclusion).