Not a lot, fellow motorists will be pleased to hear.
Kill a cyclist as a professional driver (despite previous convictions for speeding and driving whilst using a mobile phone) and just 200 hours of community service is required thanks to Bristol's finest Judge Neil Ford (I am sure the motoring surname is a coincidence!)
That is just double the sentence for beating a cyclist unconcious if they should clip your wing mirror.
If you kill a colleague by running over him in a lorry that you should not be driving because you are blind in one eye and cheated on your eyesight test to get your licence then that is 150 hours of community service. At least you do not lose your driving licence though! Just 9 points and a restriction to cars rather than HGVs - Thanks again by the way Judge Ford for that one too.
Mind you a word of warning. Make sure you stop if you kill someone because you are too blind to drive. A poor motorist who has glaucoma and cateracts will have to serve 4 months in jail of an 8 month sentence for killing a cyclist, obviously not for taking a life but presumably for failing to stop and only being caught as he returned home having attended the meeting he was driving to in the first place.
But despite the minor risk of a slap on the wrists you still need to be careful. Remember there is a fellow motorist with one eye about in Bristol.