UKIP leader Nigel Farage “insulted the intelligence of voters” as he warned yesterday that increasing the minimum wage would see Britain swamped by immigrants.

Speaking on a phone-in BBC Radio 5 Live programme, Mr Farage was asked by a caller whether he would raise the lowest legal pay rate.

“There is a problem with doing that. That is that if you increase the minimum wage, you may actually even attract more migrant labour,” he responded.