Degree Result

Hi, was wondering if anyone could tell me what this means. I finished my BSc in August due to illness, having half my exams delayed and taking them as delayed first sits. I got my module results for my final exams last week, but not my final grade. Today I got an email saying I have been awarded:
Degree of Bachelor of Science (I)
Does the (I) stand for anything? I am slightly concerned because it doesn't mention honours and there seems to be no grade, unless (I) represents a grade. I'm concerned this means I have been awarded an ordinary/pass degree.
My averages for 2nd and 3rd year are both low 70s, so under normal circumstance would expect my grade to be a first. However I'm worried some decision has been made due to my extenuating cirmumstances or maybe an error and they have neglected the exams I took in August or something.
I'm just confused by the email and don't know what it means. If anyone happens to know, would be grateful.