Curtis Rona's try double will get him the headlines after London Irish claimed an historic away win at Harlequins but the stardust he sprinkles on the Exiles is felt just as much off the pitch as on it.

The Wallabies star crossed in each half in their 29-15 bonus-point win at the Stoop as - a fortnight on from their win at Franklin's Gardens against Northampton - Irish made it back-to-back Gallagher Premiership away wins for the first time since 2014.

Rona was aided and abetted by fellow Australian international Adam Coleman in the second row as the Exiles climb to eighth and within touching distance of the top six and even the play-offs.

Meanwhile, Quins slide to seventh in the standings as scores from Alex Dombrandt and Cadan Murley were all they could muster in a disappointing showing on home turf.

And Paul Gustard admitted his injury-hit side were outclassed where it counted on Saturday.

"We are struggling with injuries, we had Niall Saunders - a young scrum-half - covering our wing because we have no one else.

"Literally. We have 10 fit backs, and they are all out there, people playing out of position as well," he said.

"We didn't get anywhere and that is testament to the team that Declan (Kidney) has built.

"He has got a lot of international experience there, 300 tier-one international caps and some of that expertise and nous probably showed at times in wet weather.

"We have to learn to play in those conditions better."