How would a firm view a 2:2 if I had extenuating circumstances?

Our view would depend on whether the mitigating circumstances were really likely to have affected your academic achievement, and on whether the results that you obtained were out of line with your previous achievements. We look, for example, at your GCSE and A level grades as well as your university grades. If you did very well in your secondary education, but did not achieve similarly good results during university then we might make an exception due to your extenuating circumstances. Some mitigating circumstances may be rather private and you should only include as much information as you feel comfortable with, although do try to help the recruiter to make a judgement on the tests described in the first sentence. I should add that academic ability is not the only thing that we assess. We look for a variety of other skills and abilities and read the whole form carefully before making a decision.