Mims was recruited to his first professional head coaching role to lead the fledging Leopards franchise in their inaugural BBL season in 1994.
[1] After leaving the Leopards during the 1999–00 season, Mims was appointed head coach at the struggling Leicester Riders.
The following season, with odds against the Riders once more, the team confounded expectations to win the 2001 BBL Playoffs and National Cup.
[5] After one year at the UT Permian Basin Falcons, Mims was appointed head coach of the Florida Tech Panthers in June 2005.
[7][8] Mims regularly worked as a basketball pundit for Sky Sports in their coverage of the NBA and BBL, a role he first took on in his days as coach of the Leopards in London.