UK doesn't have a mind of its own and gradually gives up its stance on any matter under US pressure. Here they also want to please Israel. At the end of the day,none of them have proof that Hezbollah were involved in Bulgaria except for their outcome is based on US & Israel pressure in return for AID.
Russia is not and will not launch infantry operations in Syria, says senior lawmaker (Reuters)
from the article: British push to blacklist Hezbollah hits EU opposition