David Cameron: Carswell resignation 'regrettable'

Tory Douglas Carswell has defected to UKIP and quit as MP for Clacton, saying he will contest the subsequent by-election for Nigel Farage's party.

The maverick Eurosceptic backbencher said he did not believe Prime Minister David Cameron was "serious about the change we need" in Europe.

But speaking to the BBC's Nick Robinson, Mr Cameron described the move as "deeply regrettable" and "counterproductive".

He said it should be up to the public to decide on the UK's future in Europe.