Their Doctors?... Nah... seriously? [England]

I guess the question most Americans are thinking, I'm just saying is going something like this:

The failed terroist attack was so blatantly bad that everybody, news and citizens, has been calling these people dumbasses essentially.

Now the report coming in is that at least three of these people were doctors, the people we generally look upon as up there among the smartest in the world. So what would possess these doctors, who were most likely wealthy, to do this?