Baroš joined Premier League side Portsmouth on loan from Lyon in January 2008 until the end of the season, with the option of making the move permanent at the end of the loan. Baroš played a significant role in the club winning the 2008 FA Cup. He won Portsmouth's match-winning penalty kick in the quarter-final at Manchester United and assisted Nwankwo Kanu's deciding goal in the semi final match against West Bromwich Albion with a suspected handball that went unnoticed by both the referee and his assistant. The final match of Baroš' loan spell was the 2008 FA Cup Final victory over Cardiff City at Wembley Stadium, where he appeared as an 87th-minute substitute for Kanu. By the end of the season, Baroš had played 16 matches for Portsmouth, including seven as a substitute, although he failed to score. He was one of a number of Portsmouth players to be absent at the team parade after the club won the FA Cup, leading to speculation he could have played his last game for the club. At the end of the season, Baroš returned to Lyon.