I also had an incident (not my fault) took their insurance details and contacted RSA about the incident. A few day later their insurance company called me to ask if I wanted to deal with them directly for the repair etc, as they were admitting liability. Contacted RSA for advise and was told, it is up to me. They did point out that any repairs would not be covered if faulty and I would be liable for fixing them to the required standard when the car is returned. As the damage was not that bad (scuffed bumper) I decided to let them fix it. However if the damage was more substantial then I would let RSA deal with it all.