Max Hastings, a former editor of Boris Johnson during his time as a journalist, has described the Mayor of London as "utterly chaotic".
Interviewed for a documentary about Johnson, to be screened by the BBC tomorrow night, Hastings said: "Supposing he became Prime Minister, the idea of Boris Johnson's finger on the nuclear button ... one day he would get it mixed up with the one to call the maid"
More top news
An 18-year-old Moroccan is in custody after two people were killed in a mass stabbing in Turku believed to have been a terror attack.
Jeremy Hunt has rejected Professor Stephen Hawking's claim that he "abused" scientific research to justify the creation of a seven-day NHS.
Showers in the north, perhaps turning heavy at times but becoming drier in the south towards the afternoon.