It’s not a religious conversion, but a philosophical one. You might term it a conversion to the Aristotelian belief in intelligent design of the universe. Per ABC News:
A British philosophy professor who has been a leading champion of atheism for more than a half-century has changed his mind. He now believes in God more or less based on scientific evidence, and says so on a video released Thursday.
At age 81, after decades of insisting belief is a mistake, Antony Flew has concluded that some sort of intelligence or first cause must have created the universe. A super-intelligence is the only good explanation for the origin of life and the complexity of nature, Flew said in a telephone interview from England. …
Over the years, Flew proclaimed the lack of evidence for God while teaching at Oxford, Aberdeen, Keele, and Reading universities in Britain, in visits to numerous U.S. and Canadian campuses and in books, articles, lectures and debates.
There was no one moment of change but a gradual conclusion over recent months for Flew, a spry man who still does not believe in an afterlife.
Yet biologists’ investigation of DNA “has shown, by the almost unbelievable complexity of the arrangements which are needed to produce (life), that intelligence must have been involved,” Flew says in the new video, “Has Science Discovered God?”