Duffy reports 'low' single sales

Duffy's new single 'Well, Well, Well' has struggled to crack the Top 40 singles chart.

The singer, who is gearing up for the release of her sophomore album Endlessly, has sold 4,000 copies of her latest track, The Sun reports, placing her at number 40 in the midweek chart.

The position comes despite promotional slots on Strictly Come Dancing, The One Show and an acoustic session on BBC Radio2.

The paper claims that the sales slump could be the result of parting ways with longtime songwriter Bernard Butler and mentor Jeanette Lee.

Duffy's debut LP Rockferry debuted at number one in the UK and sold 6.5 million copies worldwide.

Endlessly is out on November 29.