Thank you for the speedy reply this is really nerve wracking to just come out of the blue like this.
The solicitor called and I denied the damages and explained the circumstances and she ended the call saying she needed to review the information she had. She said she would call next week if it was to go further and that if I didn't hear from her not to worry, although I asked her to call even then just to confirm.
So far I have no registration of the vehicle, no idea of the 3rd party it was hired through and no reference/account number to request.
I will stay poised to send the SAR