The Foreign Secretary has ended his £250,000 contract to write a weekly article for The Daily Telegraph following his appointment to the Cabinet.
Hodder & Stoughton has postponed publication of Shakespeare: The Riddle of Genius — which had been due out in October, but it expects to release the work in the future. Mr Johnson received an advance of around £90,000 for the book.
Mr Johnson’s outside earnings from writing saw him pay nearly £1m in tax in four years.
Over four years, he was paid £987,097 for his Daily Telegraph column — while book royalties brought in a further £469,385.
Mr Johnson brought his 20 years of work with the newspaper to end in a conversation with group editor Chris Evans, who is understood to have thanked him for his service.
He is expected to write opinion pieces for a wide-range of newspapers in his capacity as foreign secretary, but will not be paid for the articles.
Hodder & Stoughton said Mr Johnson’s book on Shakespeare would not be published for the “foreseeable future”, but it is unlikely that the company will ask for the advance back as it wants to release it at a later date.