An Apprentice winner has condemned the alleged actions of her estranged half-brother, who has reportedly joined Isis in Syria.

Isaiah Siadatan, 24, is believed to have left the West Midlands in 2014 travelled to Syria, leaving his pregnant wife and two children in the UK. He is accused of threatening to kill his wife, Kerry Thomason, if she did not take their children to Syria.

On Sunday, it emerged that Mr Siadatan is the half-brother of Yasmina Siadatan, the winner of the Apprentice in 2009.

A spokesperson said in a statement to the Mail that she had not had any contact with her brother for more than five years. They said: “She wishes to make it clear that she condemns these alleged actions and political views in the strongest possible terms.”

It is believed Ms Siadatan, 34, discovered her half-brother was allegedly linked with the terror group after reading that his wife was on trial for terror offences.

Thomason, 24, was among four people found guilty of terror offences in a trial held at the Old Bailey last week.

She was arrested after booking flights to Turkey for her and her children, and pleaded guilty to assisting Siadatan in travelling to Syria and engaging in acts of terrorism.