[dylan604]

Could it also be that "mainstream" news are actually trying to verify information and/or obtain confirmation from other sources? All of that is done in an attempt to avoid promoting false information. People tweeting do not do any of that

[iamnothere]

Could be. Of course, the UK press can also be subject to “D-Notices” that prevent publication of certain sensitive stories. In cases where a story may be subject to a D-Notice, your only hope for information is to go to alternative or foreign media.