London - Nissan's decision to axe planned production of the X-Trail SUV in the Brexit-backing city of Sunderland is a heavy blow to the British motor industry, which repeatedly warned against quitting the EU.
The Japanese carmaker announced on Sunday that the SUV would no longer be manufactured at its vast plant in Sunderland, northeastern England, despite Brexit assurances from the government.
Nissan has become the latest corporate big-hitter to slash investment in the face of heightened economic uncertainty and a potential no-deal Brexit.
"Brexit uncertainty has decimated investment in the UK auto industry and until that position is clarified, manufacturers are struggling to find a risk-free case for investing further here," Cardiff University professor Peter Wells told AFP.
"Clearly there is a feeling that the short-term to medium-term investment opportunities here are not what they were - and they are certainly higher risk.
"And I think there are real concerns over access to European markets and access to markets where the European Union has established agreements."
The sprawling facility, producing cars destined for the European continent, is also seeing weak demand for high-polluting diesel cars - which face tighter regulation worldwide.
"The ongoing backlash against diesel... has affected not just Nissan but other companies here, and that's exacerbated the other problems faced by the industry as a whole," Wells added.
In Britain alone, new car sales slid in 2018 on weak demand for diesel vehicles, as consumers continued to ditch diesel cars for automobiles seen as more environmentally friendly.
Clock ticks to Brexit
Nissan has decided to move assembly of X-Trail vehicles to its global production hub on the island of Kyushu in southern Japan, reversing a decision made in October 2016.
Shockwaves quickly spread to London, where Prime Minister Theresa May faces an uphill battle to agree a Brexit deal with Brussels as the clock ticks down to the planned March 29 departure date.
Sunderland, which has a population of 300 000, voted in favour of leaving the European Union in the June 2016 referendum.
Business Secretary Greg Clark told a parliamentary hearing on Nissan's decision that company executives told him of "the need for us to come together and to resolve the question of our future trading relationship with the EU".
"I believe their advice should be listened to so the automotive industry… can seize the opportunities for Britain to be a world leader."
Nissan employs 7000 people at the Sunderland plant - its largest in Europe - which has produced cars since 1986.
Some commentators argue that the recent sacking of disgraced Nissan boss Carlos Ghosn likely also prompted the decision.
"I think that he (Ghosn) was critical in getting the assurances from the UK government and making the decision to bring production to the UK," Aston Business School professor David Bailey told the BBC.
"It was shortly after his demise I said... that we may see a re-evaluation of some of those investment decisions, that is exactly what we've seen."
Nissan has committed to the manufacture in Sunderland of the current Qashqai, Leaf and Juke models and the new Qashqai from 2020.
The giant is a major employer in the city, a former industrial powerhouse that has suffered decades of economic decline.
However, professor Christian Stadler at Warwick Business School warned that Nissan could shift even more production in the event of no deal.
"Should it be a hard Brexit, I would not be surprised if also the decision to produce the Juke and the Qashqai might be re-examined," he told AFP.
"If you have no trade (deal) with Europe then it might make more sense that you produce them in Japan and ship them from over there. At least you have a trade agreement."
Global carmakers are also struggling in the face of China's economic slowdown, alongside its ongoing trade row with the United States.
"China has been the fastest-growing market for automobile producers for years and we have seen most recently for the first time a decline on the demand side," Stadler noted.
"You might still have to factor in reduced demand in China. That's a big worry for the industry."