Sky are already including Twin Peaks in their "coming 2017" promos, and they have a deal in place with Showtime for their content so luckily we've known for some time it was going to be shown here in the UK.
Not sure if you get it, but Sky Atlantic or someone like them will likely pick up the rights, if they have streaming on their site and all that.
(I don't know the answer, though.)
Hopefully they'll do a Game of Thrones style airing where it's as close as possible to the US broadcast time. It was a pain avoiding Westworld spoilers, and that was only a couple of days after the US transmission.