18:00Six O'Clock NewsBrexit breakthroughBBC Radio 4 Duration: 30 minutes Fri 8th Dec 2017, 18:00 on BBC Radio 4 LWAvailable for over a yearListen nowTheresa May has hailed a "hard won" breakthrough in the Brexit talks after sealing an agreement with Brussels to move to the next stage.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online