The back row forward, is in his second season with the club and capped off an incredible first campaign with the Player of the Season Award.

His stats were up there with the best in the league for carries and turnovers.

The openside flanker has made 32 appearances for London Irish, scoring seven tries.

Cowan said: “I have really enjoyed my time at London Irish and was stoked to extend that by a further two seasons.

“London Irish has opened doors to international rugby and I believe the club will constantly improve my game.

“There are exciting times ahead for us and I’m keen to be a part of that.”

Cowan, above, travelled to North America with Scotland in the summer where he earned his first international cap.

He was also in the Scotland squad for their autumn series and played in the matches against Argentina and New Zealand and was man of the match against Tonga on Saturday.

Exiles Director of Rugby Brian Smith added: “Blair has been outstanding since arriving at London Irish. His work ethic in training and on the park sets a great example and he is fast becoming a real leader in the squad.”

London Irish hope to bounce back from last weekend's 33-23 home defeat by Bath when they host Gloucester at Madejski Stadium this Sunday (1pm ko).