The Archbishop of Cantebury, Rowan Williams, is considered a moderate theist because he accepts evolution.  We should not let this distract from how thoroughly his views contradict science.  As Sean Carroll has to clearly explained recently, believers like Williams don't accept physics. He doesn't accept really basic, well-established physics. His is not a trivial rejection, it's a rejection of fundamental principles, including causality and conservation.

Evolution is a diversion, in that we do tend to consider believers as relatively harmless if they accept that the Earth is billions of years old and that species have changed. For Williams, reality runs on magic. Evolution is not the natural selection of random mutation, but a supernatural plan to make Man. He's a cosmic conspiracy theorist.

Also, for Williams, the human body is not biochemicals behaving according to centuries-established rules of physics. There is no conservation of matter or energy, as there cannot be if we have spiritual experiences. His beliefs really are that crazy, and should not be treated as any less so because they are so common.

"There must be more" may be one of William's defences against materialism, to which the answer should be for him to go the the LHC and take a look for himself.

There is morally moderate theism. But there is no scientifically moderate theism. It's all quite barmy, and utterly detached from scientific reality, even if there is some nod towards evolution.