William Hague: Carswell decision is 'counter-productive'
The prominent Conservative MP, Douglas Carswell, has announced he is defecting to the UK Independence Party.
He will resign as an MP, triggering a by-election in his Essex constituency of Clacton.
William Hague, Leader of the House of Commons, said the government already had a strong record on negotiating change in Europe and support for UKIP was counter-productive.