Sadiq Khan has commissioned his own assessments of the impact of Brexit on the economy after the Government admitted it has done no such studies itself.

The Mayor of London said he had been forced to act by the “outrageous” omission and has requested comprehensive studies on the effect that Britain leaving the EU will have on nine key economic sectors.

Among those to be assessed are financial services, construction and the creative industries, all of which are likely to be significantly affected by Brexit.

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The other sectors to be covered are digital, life sciences, hospitality, culture, food and manufacturing, and science and technology.

The studies, which will be carried out by analysts at Cambridge Econometrics, will consider both the impact of Brexit on the London economy and its wider consequences for the rest of the UK.

They will assess a range of possibilities, ranging from the status quo to a hard Brexit in which Britain exits the EU without a transition period.

Despite having previously suggested that impact studies have been carried out, David Davis, the Brexit Secretary, told the Brexit Select Committee earlier this week that there is “no such systematic impact assessment”.

He added: “I’m not a fan of economic models because they have all proven wrong.”

Shape Created with Sketch. Brexit bonhomie as May finally seals agreement with EU leaders Show all 10 left Created with Sketch. right Created with Sketch. Shape Created with Sketch. Brexit bonhomie as May finally seals agreement with EU leaders 1/10 Britain's Prime Minister Theresa May is welcomed by European Commission President Jean-Claude Juncker Reuters 2/10 EU President Jean-Claude Juncker greeting Theresa May at the EU Commission in Brussels PA 3/10 Britain's Prime Minister Theresa May poses for a picture with European Council President Donald Tusk REUTERS 4/10 EU Commission President Jean-Claude Juncker walks behind British Prime Minister Theresa May EPA 5/10 British Prime Minister Theresa May (L) and European Commission President Jean-Claude Juncker address a press conference at the European Commission in Brussels AFP/Getty Images 6/10 British Prime Minister Theresa May speaks at a press conference with EU Commission President Jean-Claude Juncker EPA 7/10 Britain's Secretary of State for Exiting the European Union, David Davis (L) and Michel Barnier (2-L), the European Chief Negotiator of the Task Force for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 enter the room by the emergency exit to attend British Prime Minister Theresa May press briefing on Brexit Negotiations in Brussels. EPA 8/10 Britain's Secretary of State for Exiting the European Union David Davis (L), Britain's Prime Minister Theresa May (2-L), European Commission President Jean-Claude Juncker (2-R) and European Union's chief Brexit negotiator Michel Barnier (R) in a meeting on Friday morning AFP/Getty Images 9/10 European Union chief Brexit negotiator Michel Barnier speaks during a media conference at EU headquarters 10/10 European Council President Donald Tusk addresses a media conference at the Europa building in Brussels AP 1/10 Britain's Prime Minister Theresa May is welcomed by European Commission President Jean-Claude Juncker Reuters 2/10 EU President Jean-Claude Juncker greeting Theresa May at the EU Commission in Brussels PA 3/10 Britain's Prime Minister Theresa May poses for a picture with European Council President Donald Tusk REUTERS 4/10 EU Commission President Jean-Claude Juncker walks behind British Prime Minister Theresa May EPA 5/10 British Prime Minister Theresa May (L) and European Commission President Jean-Claude Juncker address a press conference at the European Commission in Brussels AFP/Getty Images 6/10 British Prime Minister Theresa May speaks at a press conference with EU Commission President Jean-Claude Juncker EPA 7/10 Britain's Secretary of State for Exiting the European Union, David Davis (L) and Michel Barnier (2-L), the European Chief Negotiator of the Task Force for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 enter the room by the emergency exit to attend British Prime Minister Theresa May press briefing on Brexit Negotiations in Brussels. EPA 8/10 Britain's Secretary of State for Exiting the European Union David Davis (L), Britain's Prime Minister Theresa May (2-L), European Commission President Jean-Claude Juncker (2-R) and European Union's chief Brexit negotiator Michel Barnier (R) in a meeting on Friday morning AFP/Getty Images 9/10 European Union chief Brexit negotiator Michel Barnier speaks during a media conference at EU headquarters 10/10 European Council President Donald Tusk addresses a media conference at the Europa building in Brussels AP

Criticising the Government for a lack of preparation, Mr Khan, who is currently on a visit to India and Pakistan, said: “It is outrageous that the Government either failed to properly consider the impact of Brexit on Britain’s economy, or are refusing to release their analysis.

“If it’s the former then I question their competence. If it is the latter then I question whether they have something to hide.

“We need to know the impact of different Brexit scenarios on our economy in order to deliver a Brexit deal that protects jobs and growth.”

The London Mayor’s announcement came hours after Theresa May and EU leaders announced they had reached a deal on the main issues that have arisen during negotiations: the future of the Irish border, reciprocal citizens’ rights and the size of the UK’s Brexit bill.

It means talks will now be allowed to progress to the second phase, which relates to the UK’s future relationship with Europe.

Despite the agreement making a Brexit deal more likely, Mr Khan said he thought the possibility of a second referendum on the final arrangement remained “on the table”.

He said: “I’m not sure what else you could do if Parliament rejects the deal the Government has done. No deal would be catastrophic for our country.”

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