NHS "NOT FOR SALE"
The U.S. president, who is due to arrive on Monday, has cast Johnson as "Britain's Trump," and during a previous visit criticised Johnson's predecessor Theresa May over her Brexit policy.
Labour's Corbyn has said Johnson will sell off parts of Britain's widely cherished health service to U.S. businesses after Brexit, which Johnson has denied. Trump previously said everything including health should be on the table in trade talks, though he later said health would not be.
Johnson said he would use Brexit to introduce new state aid rules, change state purchasing policies and reform farming so that public bodies aim to "buy British" goods.
"The NHS is not for sale," he said.
Taking questions from LBC listeners, Johnson declined to say how many children he had or whether he would have any more.
Johnson, 55, is living at the prime minister's Downing Street residence with his partner Carrie Symonds after separating from his wife last year.
