He remained with DPR for the first round of the 2008 GP2 Asia Series, but was dropped after signing for rival team FMS International for the premier 2008 championship.

Surprisingly, with only five days to the 2008 championship start, FMS International terminated Soucek's contract unilaterally, replacing him with fellow Spaniard Roldán Rodríguez [1].

[4] However, he returned to race in the series after one round of the championship as a replacement for the injured Christian Bakkerud in the Super Nova team.

[5] After two races with Super Nova, Soucek then returned to the DPR team where he replaced Giacomo Ricci, himself substituting for the injured Michael Herck.

[7] He achieved one podium (at Hungaroring) and several more point finishes and ended the season tied with Roldán Rodríguez as best Spaniard.

As part of his prize for winning the championship, he tested for the Williams Formula One team on 1 December, setting the fastest time of the day.