Tariff Consultancy Ltd is a London UK based pricing and tariff services research company. They specialize in strategic analysis, pricing, marketing and regulation across mobile businesses internationally. Tariff Consultancy is the resource center for information, data, analysis, reports, studies, consultancy, research, symposia and events related to mobile pricing and marketing. Margrit Sessions is one of the world's leading specialists in pricing, tariffing and billing analysis. Prior to establishing Tariff Consultancy Ltd in 2006, she headed global tariff consultancy TARIFICA for 17 years. She has also held the position of Tariff Expert for the European Commission.