AA for me
Been on the back of the flatbeds twice now

And thats the tow vehicle not the rallycar/trailer

Both times picked up from breakdown point, and taken straight back home. Both times used outside contractors which is good, as the AA is a "RELAY" service, which is exactly what it says.
If your at one end of the country and need to go to the other then they will "relay" you from point to point, usually with a little wait at changeover points. Makes the journey twice as long but who cares at least you get home.