SBW's gracious act for refugees

Sonny Bill Williams during the captains run at Twickenham Stadium. Photo / Brett Phibbs

Sonny Bill Williams has extended his support for Syrian refugees in London offering them tickets to tomorrow's All Blacks' Rugby World Cup semifinal against the Springboks.

On the eve of the clash at Twickenham, Williams took to Twitter to ask agencies in London to put him in contact with a Syrian refugee who would like two tickets to go to the knock-out clash featuring rugby's two biggest rival.

"Any agency in London with a Syrian refugee that wants 2go to the game 2mrw I have two tickets to give you. Let me know," he wrote.

Any agency in London with a Syrian refugee that wants 2go to the game 2mrw I have two tickets to give you. Let me know

— Sonny Bill Williams (@SonnyBWilliams) October 23, 2015

His comments have been retweeted and favourited hundreds of times since it was posted on the social media network.

Williams' gesture was well received by his fans and many commended him for his generosity.

Brett Lee wrote; "What a man! Good on you Sonny! Wow what leadership and a beautiful idea."

Nazea Silbery wrote; "@SonnyBWilliams the humility and selflessness of you my bro. Always giving."

Millions of Syrian refugees have fled conflict in their home country since the Syrian war first began in 2011. In recent months, hundreds of thousands of Syrians have made their way into Europe and some have made it as far as the UK.

The Middle East nation has been decimated by a deadly civil war and increasing attacks by ISIS fighters.

The fighting has created the world's biggest current refugee crisis