http://www.sciencemag.org/news/2020/12/scientists-fear-no-deal-brexit-deadline-looms

Brexit is set to become a reality, but its likely consequences for researchers are still emerging. The United Kingdom left the European Union on 31 January, but has remained part of EU trade and travel agreements while the final Brexit deal is negotiated. On 1 January 2021, those ties will be severed—and a Brexit deal has yet to materialize.

The future of research funding, international collaboration, and wrinkle-free supply chains of lab stocks hinge on the details of the final deal, but those issues are “some way back in the queue” behind the sticking points of a trade agreement, says James Wilsdon, a science policy expert at the University of Sheffield.