So it seems the only location that Bedivere resides is Camelot which I believe is underneath the Welsh estate, correct? Otherwise, he appears in London in the guise of a "business contact" to meet with the old man stand-in "collector." Additionally, he doesn't use the front door? If he were to travel outdoors, it would be at night only and by carriage. Yes? Any of the other estates never see Bedivere and would not recognize him. 

So if Wiz wanted to pull this wine-stealing bit, he would have to have Gabriel appear in Camelot... I really think that is what Grey is saying. The question is, can Gabriel even do that? Also, with the amount of holy shit in Camelot, would Gabriel not be fried to a crisp? Is there any entrance to Camelot other than the water entrance? Grey, you should tell people about the water-only entrance.