The band Biffy Clyro are among 14 new artists joining the Reading Festival line-up.
The event, which attracts thousands of people to the town every year, will take place at Richfield Avenue over the August bank holiday weekend.
Tickets sold out in just two days when they were released earlier this year after the event was cancelled last year due to the pandemic.
Other acts to the Reading and Leeds 2021 line-up also include: Russ Millions, Holly Humberstone, Chaya, Bakar, Blanco and Trillary Banks.
The new additions will be joining the twin-stage headliners Liam Gallagher, Disclosure, Catfish & The Bottlemen, Post Malone and Stormzy.
Biffy Clyro are very happy to be returning to the festival and said: "We are delighted and honoured to be headlining Reading & Leeds for a third time. We cannot wait to get out there and play for you all again after such a tough year."
However, due to logistics some artists are no longer able to perform at the festival. This includes: Queens of the Stone Age, Madison Beer, Denzel Curry, Sofi Tukker, Super Whatevr, Wallows, Oliver Tree, Tate McRae, MizorMac and Nation of Language.
Festival-goers will be expected to show their Covid-19 status before entering, just like at other recent events.
All ticket holders aged 11 and over will have to show one of the following:
Proof of full vaccination – both doses received (with the second at least 14 days prior to the festival)
Proof of a negative NHS Lateral Flow Test taken prior to travel on the day of arrival at the festival
Proof of natural immunity based upon a positive PCR test within 180 days of the festival (including 10 days self-isolation following the result).