 From the mid-1970s, he themes ranged from philosophical subjects to socio-political commentary.Udechukwu has had more than 25 one-person exhibitions in Nigeria, England, Zimbabwe, Germany, and United States.His art work is in the collections of National Gallery of Modern Art, Lagos; National Council of Arts and Culture, Lagos; Centre for Cultural Studies, University of Lagos; Iwalewa-Haus, University of Bayreuth, Germany; Museum fur Volkderkunde, Frankfurt/Main, Germany; Bradford City Museums and Galleries, Bradford, England; Smithsonian National Museum of African Art, Washington, DC; Newark Museum.