Sentencing guidelines are here:
sentencingcouncil.judiciary.gov.uk/docs/web_causing_death_by_driving_definitive_guideline.pdf
"Cyclists, motorbike riders, horse riders, pedestrians and those working in the road are vulnerable road users and a driver is expected to take extra care when driving near them. Driving too close to a bike or horse; allowing a vehicle to mount the pavement; driving into a cycle lane; and driving without the care needed in the vicinity of a pedestrian crossing, hospital, school or residential home, are all examples of factors that should be taken into account when determining the seriousness of an offence. See paragraph 24 below for the approach where the actions of another person contributed to the collision"
"The fact that the victim of a causing death by driving offence was a particularly
vulnerable road user is a factor that should be taken into account when determining the seriousness of an offence. "
"Since the maximum sentence has been set at 5 years imprisonment, the sentence ranges are generally lower for this offence than for the offences of causing death by dangerous driving or causing death by careless driving under the influence, for which the maximum sentence is 14 years imprisonment. However, it is unavoidable that some cases will be on the borderline between dangerous and careless driving, or may involve a number of factors that significantly increase the seriousness of an offence. As a result, the guideline for this offence identifies three levels of seriousness, the range for the highest of which overlaps with ranges for the lowest level of seriousness for causing death by dangerous driving. "
"The three levels of seriousness are defined by the degree of carelessness involved in the standard of driving. The most serious level for this offence is where the offender?s driving fell not that far short of dangerous. The least serious group of offences relates to those cases where the level of culpability is low ? for example in a case involving an offender who misjudges the speed of another vehicle, or turns without seeing an oncoming vehicle because of restricted visibility. Other cases will fall into the intermediate level."
The lowest level is described as "Careless or inconsiderate driving arising from
momentary inattention with no aggravating factors", and for this type, apparently, prison would be inappropriate. For anything beyond that, 36 weeks would be the starting point.
It seems to me that it's a bit more than momentary inattention, when the cyclist would have been visible for at least 11 seconds. Momentary would be ONE second, not 11.
It is stated that tuning a radio is careless driving, but using a mobile phone would be dangerous driving.