I think the attacks are reported, but horrific that they are they do not get the profile of murders.
Some are certainly racist hate crimes, if such constitute terrorism.

Guardian one year ago,
"Six in 10 of all victims were male, while 71% described their ethnic origin as white British, the figures show (white British, according to the 2011 census, accounts for 80% of the British population in England and Wales). Globally, an estimated 80% of victims are women.
Jaf Shah, the executive director of the support group Acid Survivors Trust International (ASTI), said: "Looking at the data in general, there is a fairly large probability that a high percentage of the incidents are male on male attacks and most likely to be gang related. The numbers appear to be very high and suggest an increase, which is very concerning.""