The three Aviva Premiership sides involved in the 3pm kickoffs in the Challenge Cup this afternoon have all come away with wins.
Gloucester and Mont-de-Marsan were level at the end of the first half, but a solid second half from the English side ensured that the visitors were unable to add to their score.
Henry Trinder was impressive for Gloucester after the break, scoring twice in four minutes.
The Exiles extended their lead through a Marland Yarde try - the only score in the second half - to seal the win for the home side.
Results in full: Gloucester 36-16 Mont de Marsan, London Irish 17-7 Bordeaux Begles, Worcester Warriors 71-19 Gernika