The research into London’s recent European election result shows two thirds of white British voters backed either the Tories or Ukip.
It goes on to reveal that two thirds of non-white voters supported Labour, which received the backing of just one in five white British voters.
The analysis suggests that the migration of ethnic minority voters to the capital’s inner suburbs is behind recent Labour victories there.
But it also comes amid debate among senior Labour voices over how to respond to the rise of Ukip support among white working class voters.
The analysis highlights that there are now almost as many non-white as there are white British voters in London.
The research is co-authored by former Equalities and Human Rights Commission chief Trevor Phillips. He said: “At the heart of these findings is the fact that there are now nearly as many minority voters in London as there are white British voters.
“But the fact that two out of three minority voters stick with Labour irrespective of where they live or how well-off they are is transforming the capital’s politics. What we’re seeing is the emergence of cultural politics...voters seem to want to vote for parties that they feel understand and like them and shun parties they think don’t fit the bill.”
The research will be published in think tank Demos’ quarterly magazine later this week. It found 41 per cent of voters in London are non-white while 51 per cent are white British.
Mr Phillips suggested that the dispersal of ethnic minorities into London’s inner suburbs had led to Labour’s successes in council elections in Croydon, Merton and Harrow. He also predicted it would mean former Tory marginals turning into Labour strongholds.
