More affluent outer London boroughs are losing out to inner London areas. Children in Tower Hamlets will receive the greatest funding, £6,792 per head by 2010-11, compared with those in suburban Bromley who will receive £4,311 per head. But the National Union of Teachers warned today that the extra cash would not be enough to stop the exodus of teachers to schools outside the capital, or avert the threat of industrial action over pay.