Council of Somali Organisation (CSO) Registered Charity (1154667) and a company limited by guarantee (07405401) Established since 2010, the Council of Somali Organisations (CSO) is the leading second-tier organisation catering for Somalis in the UK. We were set up by Somali community leaders and change agents, with the support of City Bridge Trust and Trust for London, to address the specific and varied needs of the Somali diaspora and organisations working with this much misunderstood community.