The 40-year-old actor was delivering the keynote address at a symposium organised by the BFI Southbank in order to mark the start of the Black Star season celebrating the contributions of black actors to the British film industry.
However, Oyelowo argued that the sense of progress the industry had made needed to be accelerated, particularly pushing for more historical and period pieces that show Britain "how it became what it is," reported Contactmusic.
Speaking about his experiences of trying to break into the industry as a young man, he recalled his experiences with fellow black actors.
"We have sat there together, we have prayed together, we have scratched our heads together, we have felt displaced together, we have felt abandoned together. They are still here. I felt I had to leave.