Theresa May has greeted Arlene Foster on the steps of 10 Downing Street, amid speculation that a deal between the Conservatives and the DUP is imminent.
The two parties have been locked in talks for two weeks on a confidence and supply deal to prop up the Prime Minister's minority government
Sources close to the negotiations say there are a few outstanding matters to be resolved, but these issues are not believed to be relatively minor.
An agreement would boost the Tories ahead of the crucial Queen's Speech vote on Thursday.
Despite fears a pact could complicate talks to restore the Northern Ireland Executive, Mrs Foster told Sky News she was confident her party would clinch agreements in Westminster and Stormont.