me personally,
I'd be on the phone, causing hell and fury over this one
despite all the 'you should have spotted what he was doing' above posts, that is non sense. yes, you cannot expect high way code compliance by motorists - agreed, a blatent disregard for safety aka indication of direction, moving into the middle of the road then slowing right down (nearly always meaning turning right, so automatic descision is made by following drivers, without them even becoming aware), then to turn round and NOT check his mirrors?
sheer disbelief people here say it is REMOTELY the OP's fault for failing to observe
maybe some of us folk may have just held back, because we are suspicious of these idiots on the road, but then the other 90% would probably have done the exact same.
so easy to say this and that about these situations when you wasn't even there
my advice mate
fight to the DEATH - you don't want a 50/50, do not roll over because of the aggrevation, fight it, you don't need to be paying excess and losing well earned NCB for some tosser because he couldn't be assed to indicate let alone check his mirror, what about blind spot check? he didn't even do this? mirror, signal, move? where did this go?
f--king imbecile should NOT be qualified to drive with senses like that