I was in my works private car park on Saturday and think I hit a BMW, I heard a noise so I think I did. I got out to look at my car and there was absolutely no damage, no scratches no anything. I went to look at the car I think I hit and there was a massive dent, and scratches and a broken number plate, basically they'd need a new bumper. I went to see my boss absolutely distraught and see came out to see it and told me there was no way I could do that kind of damage without any damage to my car, she said it would have been there before, so I didn't leave my details and left. Have I done the right thing? or should I go and find the driver and pay for damages even if it might not have been me?