His longest stint was spent with the Northampton Saints, with whom he formed a formidable reputation and rose to prominence, becoming a fan favourite.

He played rugby union from the age of 15 when he went to St Peter's College, Auckland the same Catholic school attended by Pat Lam who also taught there.

In his final year at school, in 2000, the team went through the season undefeated, winning the Auckland Championship and the New Zealand First XV Knock out competition.

This upward trend in performances continued into the 2008/09 season when – combined with Tom Smith's move towards coaching – Tongaʻuiha cemented his place in the match-day squad and has had his fair share of appearances in the starting XV.

[4] On 30 June 2016, Tongaʻuiha returned to England to join new Aviva Premiership side Bristol Rugby on a two-year deal, prior to the 2016–17 season.

His sights had been firmly set on the 2007 Rugby World Cup to be held in France – ensuring his and other seasoned professionals playing Europe's participation.

Tongaʻuiha was again part of his country's World Cup squad for the 2011 event, starting in three and featuring in all four of Tonga's matches, including the impressive 19–14 win in their final game over runners-up France.