To be honest i've been quite lucky with the RAC. The first time they sent someone out and he asked what had happened and i told him i though the rings were fucked. He had a quick check agreed and sorted a low loader out no problem.

The second time when i mangled a driveshaft i told the woman on the phone what had happened and that it would need a low loader and they sent one no questions asked.
On both occasions they were extremely careful with the car and very friendly. One of them even offered to help push the car into the garage.