I'll try to keep this short.
We're sending a Letter Before Claim to a car dealer next week, following an almost six month nightmare after purchasing a faulty used car. This guy is a complete amateur and is out of his depth, but I would be amazed if he started cooperating now.
He has carried out two separate repairs at his own expense, so he has admitted liability in that sense. The point at issue now is that the fault has reoccurred and he is now saying there's nothing wrong with the car. We really didn't want to go down this path but we've run out of options. We've done everything possible to try to enforce our right to reject and negotiate a refund, but he is refusing to entertain the idea.
I'm feeling a daunted by the prospect of starting legal proceedings. I have a ten year old law degree, and I'm vaguely familiar with the parlance, but if anyone has any tips or advice for how to do this as a layperson, I would be very grateful!