Rose Gentle, 45, from Glasgow, who has been an outspoken critic of the Government's handling of the conflict, was not among family members drawn in a ballot for tickets to watch next Friday's session in person.
The mother of a soldier killed in Iraq fears she has been deliberately blocked from watching Tony Blair give evidence to the official inquiry because of her campaigning.
Rose Gentle, 45, from Glasgow, who has been an outspoken critic of the Government's handling of the conflict, was not among family members drawn in a ballot for tickets to watch next Friday's session in person.