A Christian peer who founded a parliamentary group to monitor North Korea also encouraged believers to pray that China might exercise wisdom as its key mediator.
Co-chair of the group, Lord Alton, told Premier: "Wisdom should be at the forefront of the situation on all sides in dealing with North Korea.
"Simply increasing the retoric and name-calling makes a dangerous situation even more dangerous."
Officials in South Korea and the United States have been monitoring the trajectory of the missile, which Seoul claims launched from an early north of Pyongyang early on Wednesday.
Urging North Korea to adher to cease actions which might esalate tensions, China aso said it was "seriously concerned" by the apparent latest missle launch.
The test was condenmed as a "provocative action" by Russia, which warned the move could damage efforts to resolve the ongoing crisis.
Lord Alton added: "I am not surprised that they [the North Koreans] have cranked up the rachet, this is something that they have done seriously."
Click here to listen to Premier's Alex Williams speaking with David Alton: