I sent them (BBC) an email regarding a "terrorist" remark they made ONCE (and then never again) and got the following answer:
Dear Sir
Thank you for your email. We have referred to terrorists in this story
when we are quoting or paraphrasing others, and this is in line with out
normal practice. It remains our policy in general to avoid labelling
groups or individals in this way ourselves. Thank you for your interest
in the BBC News website.
Regards
BBC News Online