Finance minister Sajid Javid said on Monday he planned to deliver Britain's first post-Brexit budget statement on Nov. 6, less than a week after the country's deadline for leaving the European Union, if it exits with a deal.

"I will be setting out our plan to shape the economy for the future and triggering the start of our infrastructure revolution," Javid said in a statement.

However, in the event of a no-deal Brexit - which would cause a major shock to the world's fifth-biggest economy - the government would act quickly to outline its approach and "take early action to support the economy, businesses and households", followed by a budget in the weeks after, the government said.

Prime Minister Boris Johnson says he will take Britain out of the EU on Oct. 31, if necessary without a transition deal to soften the economic turmoil. But lawmakers have passed legislation aimed at forcing him to seek a delay if there is no transition.