[1] Mitchell, born in Blyth, South Australia, was brought over to the UK in 1930 by Roger Frogley,[2] before he started his British leagues career racing a couple of times for Birmingham Perry Barr.
The Birmingham team folded, leaving Mitchell to join the Crystal Palace Glaziers during the 1930 Speedway Southern League season.
[3] He was named in the Crystal Palace team for 1931 but he chose to stay in Australia for the season.
He failed to make it out of the reserves and joined Plymouth Tigers mid-season.
[8] After World War II, he joined Edinburgh Monarchs and spent fours seasons with the Scottish club from 1948 to 1952, before becoming their team manager.