Carmaker Ford has announced plans for a major shake-up of its operations in the UK and mainland Europe.
It is expected to lead to thousands of job losses across Europe, including the UK, although cuts at its UK factories are not thought to be imminent.
But Ford Europe boss Steven Armstrong said should the UK leave the EU without a negotiated deal, a further review of UK operations would take place.
Ford is now going to talk to unions about measures to reduce costs.
This includes focusing on more profitable models and exiting less profitable markets, to concentrate more in future on electric and hybrid technology.
The firm will also expand its commercial vehicle business, which will be one of three new divisions being created, along with passenger vehicles and imported vehicles.
Ford hopes the changes will enable it to achieve a 6% operating margin in Europe.
The UK's biggest union Unite said it was working closely with Ford to safeguard jobs in the UK and look after the interests of employees.
The union also said it expected the impact of cuts on jobs in the UK to be limited.