[3] Returning to the Ospreys for the 2007/8 season, he found competition hard against the in-form Shane Williams, despite having already played international rugby for Wales by that point, and spent much time in the second team.

Following this, Brew joined the Scarlets in September 2020 as short-term injury cover, but played just one match before announcing his retirement in December 2020.

Brew was also named as part of Gareth Jenkins's squad for the two-Test tour of Australia in May 2007 and gained his second cap in the second Test defeat in Brisbane.

Brew was named in Jenkins's 41-man preliminary 2007 Rugby World Cup summer training squad in the June, but failed to make the final cut for the tournament.

In November 2010, Brew was recalled to the Wales national squad for the Autumn International series and was selected in the starting line-up against Fiji.