The Dutch organisation ForumC recently had an interview with Alister McGrath about his faith. He explains that he was in his youth a very aggressive atheist, partly because the religious tensions that were happening around that time in the world.
His conversion to religion happened when he was studying chemistry at the university of Oxford. In the interview he states that a deeper knowledge of the philosophy of science caused him to think that atheism did not have ‘the intellectual resilience’ he thought it has in his youth.
I embedded the video below. See for yourself (some words are in dutch, but the overall meaning is clear).