Lord Ashcroft to write unauthorised biography of Carrie Johnson

The billionaire Conservative donor Lord Ashcroft has announced that he is to write a biography of Boris Johnson's wife, Carrie.

The peer said on Thursday that he had planned an unauthorised book exploring Mrs Johnson's work history and campaigning on animal rights issues.

Lord Ashcroft has previously written biographies of David Cameron, Rishi Sunak and Jacob Rees-Mogg, as well as other books on military history and British politics.

Mr Johnson's spokesman did not comment on whether the Prime Minister would give Lord Ashcroft an interview for the book.

In a blog on the Conservative Home website, Lord Ashcroft wrote: "Carrie has interested me for some time.

"Many people know her as Boris Johnson's wife, but her influence developed long before she moved into 10 Downing Street via her work over the last decade within the Conservative Party and also through the posts she has held working for government ministers.

"Aside from politics, she has campaigned in the fields of the environment and animal rights, both of which are areas of great interest to me.

"As with all of my political biographies, this project will be independent, objective, open-minded, fair, factual and even-handed. The research I've done already has proved fascinating."