Scott Johnson, the band's 33-year-old drum tech, lost his life on Saturday afternoon (June 16) when an outdoor stage collapsed at Downsview Park in Toronto, where Radiohead were preparing to play a show.
Radiohead drummer Phil Selway (above, far right) posted a message on the band's website reading: "We have all been shattered by the loss of Scott Johnson, our friend and colleague.
"He was a lovely man, always positive, supportive and funny; a highly skilled and valued member of our great road crew. We will miss him very much.
"Our thoughts and love are with Scott's family and all those close to him."
Johnson, who hailed from Doncaster, had also worked with bands including Keane and White Lies.
Three other people are believed to have been injured in the accident, and Canadian authorities are due to begin an investigation into the cause of the stage collapse as soon as the structure and the surrounding area have been made safe.
Support act Caribou also released a statement which read: "We are profoundly saddened by what happened... All our sympathy is with the band and crew and the families of those affected."