I hate hearing this and its becoming more frequent. Trouble is there are so many factors that we don't know about, was it rider error, driver ignorance. There has been a big difference I have noticed with small and large goods vehicles having "Cyclists do not pass on the left" stickers and also audible warnings when the truck is turning - has this become law? or just companies retro fitting there fleet.
http://www.movingtargetzine.com/article/lorry-company-cemex-urges-others-to-look-daley-attacks-cyclists