Raph wrote:I've written a letter to the company but haven't sent it yet, it's moderately friendly, saying I've got the videos ...
When I write to companies about their (bad) drivers I don't make specific statements about what I intend to do. Rather I tend to say e.g. "I thought it best to give you the opportunity to respond and take appropriate action before I pursue the matter further through other means". Chances are they are not aware as to what you could even do, let alone what you intend. I tend to think that if you make specific "threats" then they can think either that "you wont do that" or the "that's not too bad, not going to affect us".
Just my opinion.
Ian