Would be very happy if Sam Fender is one of the headliners. His show at the O2 was brilliant, and the biggest singalong of the night was (surprisingly) “People Watching”, so I think the new songs would go down well with the Glastonbury crowd as well as the older ones. His last set at Glastonbury was a highlight for me that year. New album out in a few weeks so timing works.
Fender will be a straight-up rock show. The 1975 - who can still do a very good straight-up rock show themselves - will probably go more conceptual if they get it.