The family of a young boy who became separated from his mother when she was injured in the Barcelona terror attack have launched a desperate appeal to find him.

Seven-year-old Julian Alessandro Cadman is thought to still be missing following the atrocity in the Spanish city yesterday evening.

Thirteen people were killed and around 100 injured after a van crashed into a crowd of people in the popular Las Ramblas shopping street.

Julian, who used to live in Kent and previously attended Chiddingstone Nursery, was with his mother Jom when the horror unfolded.

In an appeal on Facebook, his grandfather Tony Cadman said: "My Grandson, Julian Alessandro Cadman is missing.

"Please like and share. We have found Jom (my daughter in law) and she is serious but stable condition in hospital.

"Julian is seven-years-old and was out with Jom when they were separated, due to the recent terrorist activity. Please share if you have family or friends in Barcelona."

Prime Minister Theresa May says the government is "urgently looking into reports" of a British dual-nationality child missing following the attacks.

The family, who now live in Australia, are said to have been visiting Barcelona for a wedding.