Hi iggy; fellow brit here, albeit an ex-pat (I live in Holland now).
This made me laugh;
"Bloody hell! They don’t tell you that sort of stuff at meetings do they!"
In addition to the two books you are reading, I would suggest you investigate the biological sciences.
You are attacking the paradigm that has dominated your life by pruning the branches, and have not yet looked to the roots.
The Borg (I guess you've picked up on that wonderfully droll name for the Dubbies (there's another one)) are disbelivable on Organisational, Scriptual and a Scientific basis.
Obviously the Organisational twatery is covered nicely by CoC. GTR is great for Scriptual debunking (and it ties in nicely with Coc as it is refered to there).
However, these are branches. The root is the belief in god.
Now, you're welcome to keep that; hell, I can't prove other wise.
But, having exposed the Organisational and Scriptual shortcomings of the Borg, maybe you need to decide for yourself if there is a god... if you think there isn't, then everything else is rather irrelevant.
Personally speaking, I didn't disprove god. You can't.
But, Biblegod is a hugely illogical creature ("The Bible in 12 words; Old Testament; don't piss god off. New Testament; be nice to everyone"), and most arguements regarding a loving, concerned creator are just applied wishful thinking. If there is a god, he's not around that much. If he cared, there would be proof, not some vast game of ineffability and 'belief', with no one being able to differentiate between a million claims to rightness. A reasonable god wouldn't allow that.
This is my opinion, not what I expect you to have.
But do look into it; Richard Dawkins is a good starting point, although if you've got a scientific background, just reading some textbooks will be a start, as you have been lied to as much about the creation evolution debate as the other things you are currently investigating.
All the best and glad to see you here.