Factual error: In the scene with the host Kenny and Freddie at Capitol Radio. Kenny puts the record on a Technics 1200 Mk2. On November 21, 1975, "A Night at the Opera" was released. The single "Bohemian Rhapsody" on October 31, 1975, but the Technics 1200 Mk2 was released in summer 1978. (00:48:00 - 00:48:30)
Factual error: In the film, Freddie meets Brian and Roger after a gig. In actuality, the three were friends while in college, after which they shared a flat and Freddie and Roger worked together selling used clothing. Freddie was in another band but was a fan of Smile and his friend was the lead singer Tim. Freddie replaced Tim but John was never in Smile. He joined after the name changed to Queen. Also, when Freddie berates John about his electrical engineer education, that wasn't true. In fact, John Deacon invented the "Deacy" amp which Queen, to this day, still uses.
Factual error: The drumkit Roger is using with Smile is a Sonor Hilite which was manufactured in the late 80s.