The Japanese carmaker said Wednesday it did not want to see a final deal that leads to higher tariffs on worsens business conditions.

Nissan Chief operating officer Ash Wani Gupta said if the transition period ends without a sustainable business case, the company's UK business itself will not be sustainable.

Nissan is a major employer in the UK, with 7000 people working at the country's biggest auto plant in Sunderland in north east England.

Now Gupta's warning comes is the you told Britain it has fewer than 10 days left to secure a deal that will govern trade from next year.

In March, Nissen said it would push ahead with a $69 million expansion at Sunderland to build a new sports utility vehicle.

When it first announced the plan in 2016, Nissan said Britain had reassured the automaker that Brexit would not affect its competitiveness.

But if there is no deal between the EU and Britain on trade, it could result in tariffs and raise costs for Nissan.

Production could also be slowed down by any delay in parts supply from overseas due to new customs checks.

There have been media reports about Nissan and Toyota would sue the UK for costs incurred by a no deal.

Brexit Gupta denied this on Wednesday, however, but Brexit has proven a sensitive topic for Japanese automaker's.

Honda said last year it would close its only plants in Britain because of the decision to leave the EU that saw a loss of up to 3500 jobs.