The jaunt provided Mr Johnson with a break after the election campaign which produced a Conservative landslide for the first time since the 1980s.
Boris Johnson's free luxury Caribbean holiday was properly declared, the businessman who arranged the £15,000 accommodation on the island of Mustique has said.
Ross was one of Johnson's aides in City Hall and was appointed to the Olympics organising committee, said the BBC report.
The prime minister's team had carefully choreographed the reshuffle, presenting it as an opportunity to foster new talent, particularly among women, while also rewarding loyal supporters to deliver his vision for Britain beyond Brexit.
The pound briefly retreated on Javid's departure but soon recovered as analysts said the new chancellor could open the way for more public spending and growth.
But the finance minister's resignation - which some commentators said might have been sought by Johnson's team - because of a dispute over Javid's advisers added to the picture that the prime minister will not tolerate dissent in his government.
"The chancellor said no self-respecting minister would accept those terms". Only a month ago Smith helped broker the restoration of a Northern Irish government, three years after a power-sharing agreement broke down.
The British province had no government since Sinn Fein and the Democratic Unionist Party (DUP) fell out in January 2017 over a renewable energy scandal.
But The Times newspaper said Johnson felt "blindsided" by the deal because it includes an investigation into alleged crimes by British soldiers during decades of sectarian violence known as The Troubles.
Smith said it had been "the biggest privilege", adding that he was "extremely grateful" to Johnson for giving him the chance to serve.
Foreign Minister Dominic Raab, Johnson's de facto deputy Michael Gove and several other key ministers stayed in post - and Javid was widely assumed to be safe.
"Without your leadership I don't believe (Northern Ireland) would have a Govt today".
Former Attorney General Geoffrey Cox, Environment Secretary Theresa Villiers, Business Secretary Andrea Leadsom and Northern Ireland Secretary Julian Smith were among the first to lose their jobs.
After years of political turmoil over Brexit, Johnson wants to focus this year on domestic issues, including investments in police, healthcare and infrastructure.
Johnson also named former aid minister Alok Sharma as the new minister in charge of the COP 26 United Nations climate summit, which is being held in Glasgow in November.
One of the biggest strains between the two countries came to the forefront last month after Britain granted Huawei a limited role in Britain's 5G mobile network, frustrating a global attempt by the United States to exclude the company from the West's next-generation communications. She subsequently warned that planning for the summit was "miles off track".