London, Nov 27: British Prime Minister Tony Blair saw a doctor at his Downing Street office after complaining of a stomach ache, a spokesman said today. Blair, 50, felt unwell on Wednesday during the pomp-laden state opening of Parliament -- just five weeks after the premier suffered a heart scare.

''He had a stomach ache and was checked over and is now feeling fine,'' a Downing Street spokesman said. ''He has been working tonight...And will be chairing cabinet on Thursday as normal.''

Blair received electro-cardiac treatment at a London hospital on October 19 after being admitted with heart palpitations. He has had a gruelling year.

The Prime Minister has struggled to convince sceptical Britons over the war in Iraq and was forced to defend his office's role in the naming of weapons expert David Kelly, who committed suicide.

Blair took over the Labour Party leadership when his predecessor John Smith died of a heart attack in 1994. He won the 1997 election to take office as Britain's youngest Prime Minister since 1812. Bureau Report