I would assume that Sabrina will be their plan B if Madonna falls through.

Basement Jaxx 110 (-10) Billy Bragg 90 Chase & Status 150 MAX CMAT 150 MAX  Confidence Man 130 David Byrne 150 MAX Everything Everything 130  Faithless 75 Fatboy Slim 100 Four Tet 130  Garbage 125 GOAT 70  Greentea Peng 125  Joy Crookes 110  Kneecap 125 Lorde 150 MAX The Maccabees 120  Nile Rodgers & Chic 150 MAX The Prodigy 150 MAX Pulp 150 MAX RAYE 80 Richard Ashcroft 110  Scissor Sisters 110  Self Esteem 140  The Streets 100  Super Furry Animals 100 Underworld 150 MAX Wilco 20  Wolf Alice 150 MAX

So if Madonna is doing 3 nights, that gives 6 left?   The cure Macca Springsteen  Ariana Grande (if she's touring at all) Rolling Stones  1975 Fontaines DC (apparently doing spurs stadium though) Nickelback    Are all possibilities I feel.   They'll be a country star and k-pop act as well I imagine but I don't know enough about the genres to make an guesses

As first timers last year the whole set-up blew our mind with the fire on the Sunday, it seemed you could get too close and I didn’t like dodging falling embers!