Assets worth 100 million Pounds belonging to Syrian leaders have been located and frozen in Britain, the BBC has learned. The European Union imposed sanctions on President Bashar al-Assad's regime after it violently suppressed anti-government protests. Most of the UK assets is cash held in bank accounts by people and organisations named in the EU's action, the BBC reported Thursday. Thousands of people have been killed in Syria since the uprising began against President Assad in March 2011. Earlier this year, President Assad's wife, Asma, was added to the list of people whose assets were frozen and more names are expected to be added to the list in the coming weeks. According to the BBC, the British government's Asset Freezing Unit lists 129 proscribed individuals from Syria and 49 companies, all subject to EU sanctions.