Why is Bargie at home to Oz in London?

I don't pay much attention to venues, particularly between the Bargies and Oz. But I noticed today the home Bargie test is being played at Twickers. Home tests appear to be worth about 7 points for the home team, so this is the equivalent of gifting Oz 7 points in a RC game.
As it turns out, it's unlikely to have any effect on the RC winner...but that wasn't decided when the schedule was set. And it could be definitive in the race for second. Bargie is far more likely to prevail in Salta than London.

Does this mean we will eventually give up a test in Pamplona for Paris?

 You don't pay much attention to rugby matches either so what's new??

 Nothing much with you I'm sure....have you ever left the country? Have you ever been to Cape Town? Hell I wouldn't be surprised if you are still living in the same provincial dump your parents condemned you to many years ago.