The Swindon plant builds 150,000 cars a year and employs roughly 3,500 people, Honda said. The treaty makes it easier for Japanese automakers to localise production at home for sale in the European Union, consulting firm LMC Automotive said in a report this month.
Earlier this month, Nissan axed production of the X-Trail SUV in the Brexit-backing northeast city of Sunderland, despite government assurances over the consequences from the European Union exit.
The Swindon plant produces more than 10% of all the cars made in Britain, and now employs some 3,500 workers.
'The significant challenges of electrification will see Honda revise its global manufacturing operations, and focus activity in regions where it expects to have high production volumes'.
"We still don't know what sort of changes Brexit will bring at this point", said Hachigo.
According to North Swindon MP Justin Tomlinson, Honda's decision is based on global trends and not Brexit.
It comes after Nissan opted to move production of its new X-Trail model from Sunderland to Japan instead, citing industry headwinds.
Australia to reopen Christmas Island detention centre: PM Morrison
The center on Australian territory has been the scene of violent riots, hunger strikes, and numerous incidents of self-harm. In 2010, a boat of 90 asylum seekers - mostly from Iraq and Iran - sank off the island, killing 50 people on board.
The manufacturer has put it down to a change of direction for the firm as it moves to focus on electric vehicles, following an industry-wide drop in diesel auto sales.
Honda has become the latest major company to consider its future within the United Kingdom as the Brexit deadline looms.
"Decisions like Honda's this morning demonstrate starkly how much is at stake", Clark said, adding that the decision was a very big blow.
The decision is still a blow to the United Kingdom industry that's battling a Brexit-related slowdown, potential tariffs and supply bottlenecks after leaving the trade bloc on Mar 29.
The plants are scheduled to close in 2021, and the move is estimated to impact approximately 4,600 employees in both countries.
ORIGINAL STORY, AS REPORTED 18/02/2019, 1500h: Honda's assembly plant in Swindon has been one of the great United Kingdom manufacturing success stories since it first opened in 1985.
"Workers at Honda must not pay the price for the prime minister playing to the hardliners in her party and we urge Honda to sit down urgently with Unite to discuss a way forward for the plant, " said Frances O'Grady.
The EU and Japan recently struck a trade deal that eliminates tariffs on vehicle exports between the two entities.