Re: "Of course you realize, this means war"
Everything owned by an Oligarch
Setting aside the fact that most of these properties were already -- on paper at least -- owned by shell companies through a convoluted network of onshore and offshore shell companies, Boris publicly signalled two days ago that it was time for the oligarchs to add an extra layer of complexity to their holdings and to recruit more lawyers ready to gum up the works and ward off any attempt at seizure.
Assuming there are few or no nuclear conflicts in the next few months, I think it's safe to say that the Tory hierarchy will be auctioning off many more offers to play tennis with oligarch's wives this summer. Expect the bidding to be heated.