A text from O2UK (mobile network) to it’s users says that there are tickets for BABYMETAL (though nothing appears on the website, yet.).
Most of the shows mentioned in the text are in the later part of the year (September – December).
Will update once more information is available.
Curious fact: All of these shows, except for The Darkness (only playing Academy venues) and Royal Phil (also not appearing on the website) are playing The O2 (formally the Millenium Dome, 20,000 capacity arena). That’s also where BM supported RHCP in 2016.
Reddit (/u/TheThrawn, /u/Captain_Username, and /u/Facu474)