Mike, we must meet up. My half brother is a past master at getting tickets through the WRU, but this time it's proving impossible for the big games - so I can't attend any of those. No doubt your schedule is sorted, but if you are welcome to stay here for as long as you need AND you get the added bonus of the fact that we are hosting Argentina, Romania, Tonga, Canada and Namibia three miles up the road...and be assured that with the possible exception of Argentina v Tonga, there's no imminent danger of those selling out.
Also, you should consider catching a BSB round while you are over either Silverstone or Brands.