Boris Johnson has criticised the "defeatism and negativity" of the government over Brexit. The former foreign secretary said: "The reason I have set October 31st as a hard deadline and we have got to go for it is that we have had enough of defeatism and negativity from this Government". The Conservative leadership candidate was speaking at a party hustings in Darlington on Friday morning. Report by Jonesia. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn