so you weren't given the option of 'rightwing bias'? I guess that shows your teacher's own bias.
Anyway, you'll have to watch some BBC TV coverage before you can answer this one. You should be able to look up their written coverage in the archive on their website, which will help. My guess is it will turn out pretty middle-of-the-road, with a stance somewhere between al-Jazeera (Arab-oriented) and Fox (rabid rightwing US network).
Remmber to distinguish between news coverage and the opinions put forward by guests who appear on analysis programmes.