Music fans required to present proof of negative NHS Covid-19 lateral flow test in order to gain entrance to festival.
Organiser Geoff Ellis says he's 'thrilled' to confirm festival's return after last year's event was cancelled due to the pandemic.
Liam Gallagher, The Courteeners and Lewis Capaldi are all confirmed on the bill for 2021 event.
The decision has been made after it was revealed large events would not be happening in the near future.
The Glasgow festival's bosses said they will continue to monitor the situation.