British Prime Minister Theresa May is launching a new working group to look for a plan B on Brexit, but the leader¡¯s latest initiative comes too late to stop businesses such as Nissan Motor Co. from ditching key commitments to the U.K.

The automaker cited ongoing doubts about the U.K.¡¯s split from the European Union in its decision to scrap plans to make the X-Trail sport utility vehicle at the Sunderland plant, its biggest auto factory in the country. May¡¯s government had previously gone out on a limb to safeguard Nissan¡¯s investment in the U.K., offering assurances in a private letter.

¡°We appreciate this will be disappointing for our U.K. team and partners,¡± Nissan Europe Chairman Gianluca de Ficchy said in a statement Sunday. ¡°The continued uncertainty around the U.K.¡¯s future relationship with the EU is not helping companies like ours to plan for the future.¡±