London was expected to vote heavily for Remain but polling expert John Curtice says turnout is lower than expected in the capital.
In a vote where every single vote counts, lower turnout in solid Remain areas could be crucial.
Some top Labour figures are saying some of their core voters have voted Leave to protest about austerity and punish David Cameron.
Top spin doctor Alastair Campbell fears many voters are turning against all the major parties.
Meanwhile formerly marginal Kettering votes to Leave.
