Britain's opposition Labour Party promised on Saturday to balance the government's books and deliver a budget surplus in the next parliament if it won the 2015 election, aided by reintroducing higher tax rates for the nation's top earners.

Ed Balls, Labour's would-be finance minister, made a binding commitment to clear the deficit of nearly 80 billion pounds ($132 billion) and deliver a surplus in his budgets, and to put national debt on a downward path by 2020.