Hit by a coach

[DKL]

I was sitting at a set of lights this morning with a large coach to my L waiting to turn L. The coach went but as he turned his rear drivers corner bumped my front passenger bumper. I heard to rather than felt it, it was minor but checking once I'd stopped there was a small scuff but the DRL is cracked and inoperative. No witnesses, they wouldn't have seen anything unless they were looking right at the point of contact.
I have the time, place and reg of the coach and plan to approach the co and see what they say. The can't deny the vehicle was there, their logs will show it, but they could just say wasn't us guv.
So as it was them, is there anything I should, or should not, say at first contact. Anyone done this?
DRL is model specific so about £300 plus fitting.

[DKL]

Large local firm. I'd expect the same level of surveillance. I very much doubt they knew at all but the parking sensors went off just before a bit of a thump at which point it dawned they'd hit me.

[DKL]

Well that brought a few interesting comments.
I use that junction every day and it's not remotely tight, there have been buses, coaches, artics etc and oddly no one else has hit me. Just one of those things. I'm not entirely sure where else I should have stopped, other than where the white lines dictate.
Anyway the coach co have been up front and honest, accepting responsibly and I'm waiting for the part to arrive at the local MB dealer. I'll fit it as it's both easier for me and less costly for the coach co, who did offer to fit it for me.
Thanks all.

Edited by DKL on Saturday 24th February 22:38