Right, on Tuesday whilst driving through London I was at some lights in the right hand lane and there was a Golf in the left lane. Ahead of the junction the left lane turned into a bus lane so obviously any cars there would have to merge into the right lane. I sped away from the lights (not mega fast or anything) and so did the Golf. I reached about 30 and stopped accelerating whilst he continued. He then came straight towards me and hit the wing of my car with the rear side of his. I stopped straight away and flashed him as he was very happy to continue down the road. Luckily he was stuck in a queue just ahead giving me time to inspect the damage. When I saw that there was a dent I had to actually open his door to get him to come and have a look. He asked to pull over at the side of the road and I obliged as it was a busy road. He stated that I was in the wrong lane, the lane I was in was for turning right only, and I told him he was wrong. He then said I should have given way to him but of course that's not true as it was his lane that was to merge with mine. He continued to protest his innocence and said there was no point arguing as the insurance companies had to decide. We swapped details and off we went. To cut a long(er) story short, he is now denying that the incident ever occurred and his insurance company will not budge an inch unless I can prove otherwise! Of course in the rush and the boiling emotions I failed to get any names of witnesses. I have never been in an accident before so had no dealings with the whole system but I didnt think it was that harsh! Christ if all you have to do is deny it happened then I might as well get an old banger and drive into his car. Anyone got any advice please?