Durham UMS request

I'm applying for theoretical physics in Durham University and have just received an email asking for my UMS scores in my maths, further maths and physics modules.
One of my further maths modules (Mechanics unit 3) i done pretty poorly in, between difficulty, almost being late because of the main road being blocked on the bus and hay fever kicking in on the detour the bus needed to take i was freaking out quite a bit.
Is it worth adding in the additional information column that's provided that i think my performance was effected by these factors (hay fever and almost late) and that i do intend to resit or will it just look like an excuse for bad marks?

I'm applying for theoretical physics in Durham University and have just received an email asking for my UMS scores in my maths, further maths and physics modules.
One of my further maths modules (Mechanics unit 3) i done pretty poorly in, between difficulty, almost being late because of the main road being blocked on the bus and hay fever kicking in on the detour the bus needed to take i was freaking out quite a bit.
Is it worth adding in the additional information column that's provided that i think my performance was effected by these factors (hay fever and almost late) and that i do intend to resit or will it just look like an excuse for bad marks?