Refusing to name them is important because if the British do name them then they would have to be prosecuted as what they are, terrorists. For UKG terrorism is when students in a Quaker Hall in London discuss blocking the gate of an arms factory, not when Loyalists torch a house with children in it.
Uilliam Mac G ᚒᚔᚂᚂᚔᚐᚋ
... 'being responsible for' or 'being behind', same refusal to name or prosecute. Same outcomes.
Under Section 56 of the UK's Terrorism Act 2000, a person commits a severe offense if they direct the activities of an organization involved in acts of terrorism at any level. [2/n]