Brandon Lewis has been appointed the new Northern Ireland secretary.
He replaces Julian Smith, who was fired after 204 days in the job and had helped to restore power-sharing at Stormont.
Mr Lewis is a former chair of the Conservative Party and, most recently, a security minister in Boris Johnson’s cabinet.
Shortly after his appointment was announced, he posted on Twitter that he was “honoured” to take on the role.
Mr Lewis has been the MP for Great Yarmouth on the east coast of England since 2010.
He campaigned for Remain in the EU referendum in 2016 but later said he would support leaving the EU as he was “first and foremost a democrat”.
Northern Ireland Deputy First Minister Michelle O’Neill said she would speak to Mr Lewis on Friday morning.
The Sinn Féin vice-president posted on Twitter that she had several issues to discuss with him.
SDLP leader Colum Eastwood said he hoped Mr Lewis would act with “fairness and integrity” in his work in Northern Ireland.
Ulster Unionist leader Steve Aiken said Mr Lewis would face a “very large in-tray” and could not “let the grass grow under his feet”.
The Northern Ireland branch of the business body the Institute of Directors said it wanted to meet the new secretary of state soon to “discuss concerns of business leaders”.
In 2018, when Mr Lewis was a Cabinet Office minister, he visited the Irish border and later met businesses in Belfast to hear their concerns about Brexit.