Chris Hala'ufia and Topsy Ojo crossed in the opening period to give Irish a 14-6 half-time advantage at the Stade Andre Moga.

Tighthead prop Halani Aulika added a third before star man Tagicakibau and a late Jonathan Joseph score completed a job well done for the Reading-based outfit.

Irish, who lie in a lowly 11th spot in the Aviva Premiership table, actually fell behind to two early Lachie Munro penalties before bursting into life.

No8 Hala'ufia was the first to touch down in the 14th minute before wing Ojo put the visitors ahead seven minutes later.

The English outfit did not look back in the second half as Ian Humphreys, who converted the first two tries, added a penalty two minutes after the re-start to steer the away side into a commanding 17-6 lead.

Bordeaux replacement Metuisela Talebulamaijaina took over the kicking duties from the injured Munro to cut the deficit to eight points before Irish surged clear in the closing stages.

Charles Brousse scored a last-minute consolation for the hosts but Irish will return home happy with their evening's work.