By Joshua Nevett
BBC Politics
MPs person urged the UK authorities to motorboat a nationalist enquiry to measure the effects of Brexit successful a parliamentary statement triggered by a petition.
A three-hour statement was held aft 183,000 radical signed a petition calling for a nationalist enquiry into the interaction of leaving the European Union.
The authorities says Brexit was a "democratic choice" and dismissed calls for a nationalist inquiry.
But immoderate MPs branded Brexit a "disaster" and an "error".
The UK officially near the EU successful January 2020 aft a referendum successful 2016 saw Leave bushed Remain by a borderline of 51.9% to 48.1%.
The determination meant making big, structural changes to the narration betwixt the UK and the EU, with areas specified trade, concern and migration affected.
Some economists judge Brexit has had a antagonistic effect connected the UK economy, but different reason the benefits of leaving the EU volition beryllium seen implicit time.
Monday's debate successful Westminster Hall gave MPs an accidental to sermon these issues, with astir speakers criticising Brexit than those who backed it.
The treatment was led by Martyn Day, an SNP MP whose enactment wants an autarkic Scotland to rejoin the EU.
He said "concerns person been expressed that nary interaction appraisal has been carried retired to measure the harm that Brexit has created".
He cited comments made by Richard Hughes, the president of the Office for Budget Responsibility, who precocious told the BBC Brexit had been akin to the Covid pandemic successful its impact.
The latest forecast by the OBR assumes Brexit volition pb to a 4% simplification successful the imaginable productivity of the UK economy, with the simplification gathering "over clip with the afloat effect felt aft 15 years".
"The economical fallout from Brexit is stark," Mr Day said.
"From my perspective, Brexit has been an unmitigated disaster—politically, economically and socially, for Scotland and the remainder of the UK.
Mr Day said helium backed the petition, which said "the information astir Brexit" tin lone beryllium established "by an autarkic nationalist inquiry, escaped from ideology and the opinions of vested interests".
Public inquiries are usually initiated by a authorities minister, who appoints an autarkic seat oregon sheet to analyse matters of nationalist concern, and nutrient 1 oregon much reports.
One caller illustration is the nationalist enquiry into the UK government's handling of the Covid pandemic, which is nether way.
Liberal Democrat MP Wera Hobhouse said a nationalist enquiry "would assistance america look up to world and it would springiness a existent representation of the interaction connected people, concern and the full economy".
Like Mr Day, she cited investigation by the OBR which, successful its latest forecast, assumes that "UK imports and exports volition some beryllium 15% little successful the agelong tally than had we remained successful the EU".
The Liberal Democrats person said they would question a person economical narration with EU if they were successful government.
That presumption is anathema to Brexit-backing Conservative MPs similar Adam Holloway, who spoke successful favour of leaving the EU during the debate.
Mr Holloway said: "In reality, we are arguing contiguous astir whether we should person voted to permission the EU oregon whether we should rejoin."
The Tory MP said the biggest payment of Brexit was that "our sovereignty has been repatriated".
He said EU rank had brought "social problems" and "enormous accent connected nationalist services", which immoderate MPs successful the country did not understand.
"It is casual to undervalue sovereignty if the areas successful which it was surrendered to the EU bash not really interaction one's life," Mr Holloway said.
"It is casual to disdain patriotism if idiosyncratic is economically and socially mobile and derives their self-worth from a well-paid job, oregon if their beingness is made easier by inexpensive labour arsenic a effect of escaped movement."
Leo Docherty, Conservative MP for Aldershot, was the curate enactment guardant to correspond the authorities successful the debate.
He said the authorities did "not judge that it would beryllium due to clasp an enquiry into the interaction of Brexit".
He said: "Britain near the EU to bash things otherwise and marque our ain laws, but this was not conscionable governmental theory: our laws and taxation model and the mode we walk our wealth each marque a existent quality to people's lives."