I know we are all just guessing at the moment, but ..
I get that its likely we are allowed to mix 3 households total over the 5 days, but doesn't that become moot if your area is tier 1? Because in tier 1 you can mix up to 6 households technically (one from each). Do you think they will have the forethought to clarify this ir will it be more interpreting the rules as you go? (Fwiw I will follow whatever the guidance is, I'm not looking for loophole just curious as to how this would work)