Tony Blair has been summonsed to appear at a Weymouth court for the trial of a woman who refuses to pay her income tax in protest against the Iraq war.
Sgt Les Hehir left behind a wife and two sons
Pat Blackburn's son-in-law was killed in the conflict, and she refuses to pay more than £16,000 in tax until Mr Blair resigns or apologises.
The judge at her trial has backed her calls for the Prime Minister to appear as a witness.
Downing Street say they have passed the request onto their legal officers.
Ms Blackburn's son-in-law, Sgt Las Hehir, was killed in an American helicopter crash in Kuwait in March 2003.
She has offered more than £500 to cover Mr Blair's loss of earnings and travel expenses for next Tuesday's hearing.
A Downing Street spokeswoman said: "We can confirm we have received the summons and it is being considered by our legal advisors.
"We cannot comment any further at this time."
Sgt Hehir, who died along with seven other British service personnel, left a wife, Sharon, and two sons, Oliver, now aged seven, and William, now aged five.