Lily Allen is convinced the singles from her third album Sheezus flopped because they were not "good enough".

The Smile hitmaker reached the number one spot in the U.K. music charts with her comeback album in May (14) but the record dropped out of the top 40 after just 10 weeks, and her singles have seen little success with her most recent release, URL Badman, entering the countdown at number 93.

Allen previously admitted Sheezus did not match the success of her earlier albums, but blamed the poor performance on unwise single choices by her record label executives.

The pop star has now confessed the flop may be down to the quality of the music, telling Britain's Daily Mirror newspaper, "Maybe the songs aren't good enough this time, who knows? I just know I can't wait to get back into the studio."

She also blamed her team and her hormones, adding, "I put my trust in other people, which I don't usually do. I usually go with my own gut feeling but maybe I wasn't feeling as confident as I have in the past because of all the hormones.

"The first thing I came back with was Hard Out Here and that was important to me, a real statement of intent, even though you couldn't put it on the radio over here because it had too much swearing.

"I thought it did really well and then management and the label chose to go with Air Balloon and I just think starting with something really aggressive and in your face and then going in a different ­direction... people need to know what they are getting."