Latest: Union will be our guiding star in forging deal with Theresa May, says DUP leader

Update 6.41pm: Democratic Unionist leader Arlene Foster has pledged to work in the interests of the entire United Kingdom as she expressed willingness to help Theresa May form a government.

The former Stormont first minister, who led her party to 10 seats in the Westminster election, said the DUP would strive for the best deal, not only for Northern Ireland but for the UK as a whole.