The chief executive of England's National Health Service (NHS) has revealed there is "significant planning" to ensure the health service is ready for a no-deal Brexit.
Simon Stevens said the NHS had been working with the UK government to ensure the supply of medicines and equipment continues in "any Brexit scenario".
Speaking on BBC One's Andrew Marr Show, he said that a no-deal Brexit was not "a desirable situation" but welcomed the preparations.
Last October Mr Stevens told the British parliament's health select committee the service had not been asked by the Government to examine the potential impact of the UK leaving the EU without a trade deal in place.
Mr Stevens told the Andrew Marr Show: "There is immediate planning which the health department, with other parts of Government, are undertaking around securing medicine supply and equipment under different scenarios.
"That will obviously crystallise when it's clear later this autumn what the UK's position will be."
He added: "Nobody's in any doubt whatsoever that top of the list in terms of ensuring continued supplies for all the things that we need in this country right at the top of the list has got to be those medical supplies."
Mr Stevens also said that every hospital in England had been asked to "reach out" to EU nationals working for the service.
He said: "Every hospital has now been written to asking them to reach out to their staff from the rest of the EU, providing that the Home Secretary has set a clear process by which people can apply to stay in this country which we hope they will do."
Earlier, Mr Stevens was asked whether the extra £20bn of funding announced for the NHS last month was enough.
He said it was a "significant improvement", adding: "It represents a real step change in the money that will be going into the National Health Service over the next five years, compared with the last five or ten."
