simple answer is no im afraid. As for aftermarket ones its all a gamble. They may sound good on paper but I would only take recomendations from people who have actualy made a claim and been paid out.
I use warranty direct and they do pay out. They were excellent on a recent claim that I made on my wifes car. They also confirmed in advance that they would cover my wifes quattro drivetrain.
There are plenty of rubbish warranties out there but WD seem to be the best.