"Parliament has a right to know before it is asked to make a final judgement that will have huge implications for every person in this country, " he argued.

BBC: Labour granted emergency debate on NHS Bill

The Yonhap news said it was expected to make contact with its ground station at 05:00 on Thursday, at which point its operators will be able to make the final judgement on whether the launch achieved its goals.

BBC: South Korea launches space rocket carrying satellite