Other nominees scheduled to perform are Backroad Gee, ENNY and Potter Payper. U.K. garage act Heartless Crew has also been added to the lineup.
Comedian Mo Gilligan and radio host Julie Aldenuga helmed the last two shows.
Dapaah is best known for his portrayal of Big Shaq in the U.K. Under that pseudonym, Dapaah plays a fictionalized rapper and released the parody track “Man’s Not Hot” in 2017.
Dunn graced the cover of Vogue Greece’s September issue.
The GRM Daily Rated Awards honors the top names in the British rap, hip-hop, and grime scene. Grime icon Stormzy, rapper Slowthai, and R&B singer Jorja Smith are a few of the artists nominated at this year’s awards show.
The winners will be revealed live on Sept. 16 at 7 p.m. BST during the virtual ceremony on GRM’s official YouTube channel.
UPDATE: This story was updated on Sept. 14 to include details of Elba’s departure as host, along with the names of artists set to perform at the awards ceremony.
