The UK's first municipal bonds agency has moved closer to launching, with 48 councils signed up to invest. The agency will allow councils to borrow more cheaply for infrastructure projects as an alternative to the Treasury-controlled Public Works Loans Board. Councils could save over £1 billion in borrowing costs over 30 years if half their debt transfers to the new agency. Council investors must finalize their investments by the end of February 2015 for the agency to issue its first bond.