He was the paper's south Asia correspondent for six years and a leader writer for the paper, specialising in globalisation.
In September 2008, Walsh moved to Bangkok, to become the programme's Asia correspondent.
While serving as an Asia correspondent, he worked extensively in Afghanistan, including the presidential election crisis of 2009.
His mother worked as an Asia correspondent for Time magazine.
Jason Burke is the south Asia correspondent of The Guardian and The Observer newspapers.
Two years later he became the paper's Asia correspondent in Hong Kong.
Paul Johnson: Asia correspondent (based in Beijing)
His time as a reporter included a stint as the newspaper's Asia correspondent, based first in Hong Kong and later in Bangkok.
From 1999-2001, he was ITV's Asia correspondent.
Following a period in Washington D.C., he became chief Asia correspondent.