Overview SONIA (Sterling Overnight Index Average) is an important interest rate benchmark. We are the administrator for SONIA. That means we take responsibility for its governance and publication every London business day. SONIA is based on actual transactions and reflects the average of the interest rates that banks pay to borrow sterling overnight from other financial institutions and other institutional investors. Financial businesses and institutions use SONIA in a variety of ways. For ... Learn about Sonia Gandhi, the former President of the Indian National Congress and the widow of Rajiv Gandhi. Find out her age, caste, husband, children, political career, and controversies. Here at Sonia Uche TV we bring you the very best of African content, Ranging from Nollywood, lifestyle and many more. And we are committed to keep you entertained all year round. Learn about the life and achievements of Smt. Sonia Gandhi, the longest serving President of the Indian National Congress Party and the Chairperson of the United Progressive Alliance. She is also a prominent leader in Parliament, a social activist, and an author.