Anyway, what do you say to the point that the new law is too narrowly focused. Only about three people die every year following collisions with cyclists but hundreds are injured. Any new law needs to cover injury too IMO.
The narrowness of the law is a major criticism for a change in the law. Apparently many, many more pedestrians are killed each year by cattle than by cyclists - should we suggest a 'causing death through not appropriately managing your cattle' law. Probably not as if there is clear negligence then I'm sure there are existing laws that would cover it.
Just for completeness there already are provisions for dangerous, inconsiderate and careless cycling under the 1988 Road Traffic Act - so those would presumably cover injury. The change to the law does specifically seem to be about a single offence of causing death by dangerous cycling (to mirror causing death by dangerous driving). But the latter has a couple of hundred convictions every year - as several thousand people die every year due to road traffic accidents involving driving. At best there might be a couple for the proposed law - but even that assumes that all deaths involving collisions between a cyclist and a pedestrian:
1. Involve the pedestrian dying
2. With the fault lying with the cyclist
3. That the cyclist was acting in a dangerous manner.
And we already have two pieces of legislation where individuals can be charged if those three criteria are met - Wanton and Furious Driving and Manslaughter. And we've seen (proportionately given how few cases there are) more cyclist convicted and jailed per death and car drivers. So it seems the law works.
The one area which might need looking at is maximum sentencing - which is two years for Wanton and Furious Driving, although life for Manslaughter.
But you also must take into account the risk and level of responsibility and accountability when you get on a bike (that weighs a few kg and can probably travel at best 30mph) and when you get in a 1500kg car that can easily travel at 70mph+. The basic risks are not the same - noting that the collision force of a bike travelling at 30mph is probably equivalent to a car travelling at less than walking pace.