Jaguar Land Rover has warned that a “bad” Brexit deal would hit its profits and threaten its £80bn investment plans.

The UK’s biggest carmaker, owned by India’s Tata Motors, said its “heart and soul is in the UK”.

But it said that without frictionless trade its UK investment plans would be in “jeopardy”.

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Downing Street has set out some detail for how customs could be handled after Brexit.

No 10 says its plan – dubbed the “facilitated customs arrangement” – offers “the best of both worlds”.

According to Number 10, the new plan would allow the UK the freedom to set its own tariffs on goods arriving into the country.

Technology would be used to determine beforehand where they will ultimately end up – and therefore whether UK or EU tariffs should be paid.