All existing contracts will remain in UK until end of life, last one 2023, all replacement contracts starting in 2022 commence in EE. The factory will now close regardless of whatever the future Brexit course takes.
We moved the major contract from Japan to UK in 2017 due to the "must be made in EU clause", we now have to move that into an EU country.
It's soul destroying, I spent the last 18 years pulling in manufacturing contracts from Czech, Hungary, Thailand, China, Japan & Mexico, quadrupled the size of the business, employed 300 extra staff and it will all be gone in a few years time.