Outspoken novelist Martin Amis waded into the battle of the sexes by claiming it will take women a century to become level with men.

Speaking at the launch of his new novel The Pregnant Widow in Manchester last night, he spoke of women going on a 'Napoleonic rampage' since the 1970s to achieve parity with men.

But he argued their efforts to achieve equality had actually been hampered by women trying to accrue more power.

He said: “Women should have got something really fixed before they did something else but they wanted to accrue more power.

“Men and women should have agreed to do 50:50 in the home and I believe a great deal would have followed from that but they didn't – the women went Napoleonic.

“It's going to take a century to get women level with men because the weight of the past is so great.”

The best-selling writer, who is a professor at the University of Manchester, went on to discuss his highly-anticipated novel in front of hundreds of people – many left shocked by his views on the male and female divide.

His new novel is being hailed by critics as a deeply autobiographical work, in which the author is at his 'fearless best' returning to the 1970s and the sexual revolution of his youth.

Amis, 60, read extracts from his 12th novel before he discussed it on stage and took questions from the audience at the university's Martin Harris Centre, Bridgeford Street.

During the public event, he also spoke movingly of the death of his alcoholic sister Sally – who died at the age of 46 in 2000 - revealing she had influenced his new novel.

He also told of the impact of her loss, saying he had suffered a 'sort of breakdown' following her death.

Amis said: “My sister threw herself into the sexual revolution and wasn't fully equipped to get through it.”

The plot of his new novel centres around three girls on a summer holiday at an Italian castle.

With them is Keith Nearing, a nervous but bright 21-year-old literature graduate, who is about to launch his literary career and has an unusual obsession with vital statistics.

He was joined on stage by Lisa Allardice, the editor of the Guardian Review, who described his latest book as 'fun'.