I was looking in the mirror and failed to notice that the car in front of the one in front had stopped to turn right. Braked rather hard, started to skid, released brakes, braked again, realised I wasn't going to have enough space to stop but luckily the CIFOTCIF had turned and the CIF hadn't moved off (prolly paralysed watching me being about to be 4' short of stopping distance) and oncoming traffic slow enough and with road just about wide enough to pass between then I came off the brakes again and swerved through the gap.
Not a nice experience and largely my fault, though I later found when following the CIF again [1] that he's one of these types who thinks it's trendy to paint his tail-lights black so I didn't really see them properly.
Just thought I'd let you all take the piss as part of my hair-shirt wearing. It's the first near miss I've had through my own mistake for about 100,000 miles.
[1] Though I ended up in front of him (can't think why he thought flashing his lights at me would help - did he think I didn't /know/ I'd screwed it up and had a lucky escape?) I missed a turn and had to use the non-optimal route through a junction and ended up behind him again.