The EU needs to "look in the mirror" and work out why it is failing to attract the continent's most prosperous countries to play a full part in the union, the Netherlands' finance minister has warned.

Wopke Hoekstra told the Financial Times it was a "catastrophe" that countries such as Norway did not want to join the EU, others such as Denmark were opting out of projects such as the euro, while Britain was on the verge of leaving.

"Countries like Norway and Switzerland, which are fantastic places to live with great economies and have a lot going for them,