Demonstrators concerned about the welfare of an East London activist caught up in the Israeli attack on an aid convoy will gather at Trafalgar Square at the weekend. Kevin Ovenden, a former aide to George Galloway, has been missing

Demonstrators concerned about the welfare of an East London activist caught up in the Israeli attack on an aid convoy will gather at Trafalgar Square at the weekend.

Kevin Ovenden, a former aide to George Galloway, has been missing since being arrested as part of convoy taking aid to Gaza.

And those concerned about his welfare will link up with a massive demonstration protesting the attack, which happened on Sunday in the Mediterranean Sea.

Mr Ovenden, a member of Respect, worked in the party's Bethnal Green office for five years.

Friends believe he has been arrested by Israeli authorities who attacked the aid convoy, and is being held awaiting deportation.

The Trafalgar Square march starts at 1.30pm on Saturday.