In a brief flurry of historical revisionism, I have just changed the word "verbal" in my two most recent posts to "oral". Any promise or communication with words in it is verbal, however the communication is delivered. An oral promise or communication can only be spoken, and that is what I meant.
Now off to watch the company six-a-side team. Unless I'm mis-remembering and it's only five a side, in which case this line too will be revised shortly.