Flew's argument boils down to God-in-the-gaps.
Rather lame and unsophisticated for a philosopher who willingly admits he isn't keeping up with science anymore.

And Neesie, you don't want this guy as your spokesperson.

Flew rejects the ideas of an afterlife, of God as the source of good (he explicitly states that God has created "a lot of" evil), and of the resurrection of Jesus as a historical fact.
[link to en.wikipedia.org]