Britain is "back in control of its destiny," Chancellor George Osborne said in a speech at a car parts manufacturing firm in Birmingham.
"The rest of the world sees that Britain is a country where we’re now back in control of our destiny, a country where we’re supporting business, that jobs – like the ones here today - are being created across our country," he said.
"But if our country is badly run, if the finances are in a mess, and costs go up, and businesses don’t feel welcome, then jobs would quickly disappear from Britain again."
More top news
Nigel Dodds slumped to unprecedented defeat to Sinn Fein’s John Finucane in a North Belfast campaign dominated by Brexit.
Chuka Umunna and Sam Gyimah, both of whom joined from other parties, failed in their bids to win seats.
Several people with lanyards on had to be pulled apart, with bystanders capturing the incident on mobile phones.