It is all reminiscent of Brexit wranglings of the past. But this time it concerns an industry of the future.
Batteries for electric vehicles must, under the Brexit agreement, source 60 per cent of their value from within the UK or Europe to qualify for tariff-free trade from 2024, a threshold that jumps again in 2027. Too much foreign content, in the jargon, and cars will face 10 per cent tariffs.
The point of these rules was to force the development of a European battery industry and its lengthy supply chain. This has not happened to the extent envisaged or required to enable the automotive manufacturers to meet the rules, say carmakers on both sides of the Channel.