Tesco is reportedly facing a bill of up to £4 billion after lawyers launched legal action over equal pay. The suit against the supermarket giant is on behalf of female shop assistants who claim they are paid less than male counterparts in distribution centres for work of equal value. Kim Element, who has worked for Tesco for 23 years, says she feels "powerless" and believes the change must come from the business. Report by Chulanin. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn