Thanks for your comments, yes I have made direct line aware of the bump and provided a statement and uploaded the dash cam footage of him driving the wrong way.
The issue is when enterprise called yesterday it was not just to arrange a replacement car. They were calling on behalf of direct line as a claims management company and to arrange a car that under their unknown policy to me I do not qualify.
The car was to be provided under a credit agreement and not as a courtesy/replacemeny car as I was expecting.
I should only need to deal with direct line and for them to deal with the other parties insurance.