Worry ye not, all those Tesla cars on EU roads will need electricity, & we’re well placed to be able to plug that particular gap with offshore wind power.
Lithium batteries need lithium, so we can do that too from our rich kaolinite deposits in Cornwall.
Of course, this would all require the government of the day to care about such business developments & I’ve not seen any interest from any of the political parties as they’re too busy bashing each other.