BBC
Sullivan's site has this nugget:
The BBC's original references to "terrorist" bomb attacks seem to have now been removed from the news service's material.

It would seem that using the term "militants" or even "insurgants" is inappropriate for those behind the acts in London, Iraq, Spain or New York. Some believe using a term like "terrorism" passes judgement, which may somehow place a bias on the reporting.
But it would also seem that describing what occurred in London cannot be done without using the "T" word.
The terrorists put in a plan specifically to kill innocents. Their hope was to disrupt the British way of life through fear.
That's terrorism.
Of course, terrorism also occurs daily to those just trying to live their lives in Iraq.
It's one of the few words for it.