They’ve also shared new song ‘Peace & Love’.
The dates follow their support tour with You Me At Six.
Cheap Meat are also among the eight new additions.
They’ve also announced their third headliner: Kodaline.
“The alien stumbles upon Earth and contemplates destroying the planet.”
This year Best Kept Secret will take place from 17th – 19th June.
The five track set sees the band air recent single ‘Parking Lot’.
The April run includes a date at London’s Boston Music Room.