Monika, you previously state that the worst offenders are not Sainsburys lorries/drivers. At what point on the journey to a Sainsburys store do Sainsburys become responsible for a 3rd party supplier's vehicle? Deliveries by 3rd parties should not be at all common since Sainsburys operate a number of distribution hubs to which the vast majority of produce is delivered and then redistributed by Sainsburys vehicles.

You are wrong in saying that the company don't deal with offending drivers effectively. They very much absolve themselves of corporate responsibility by ensuring that drivers are held personally accountable for incidents they are involved in. This is the right course of action in some contexts but not others. Because of this your other point about there being a good reason for drivers to avoid reporting such incidents is quite valid (but it doesn't equate to it accounting for all unreported incidents).

I don't spend a lot of time at the back of Sainsburys so I'm not aware of the illegal and dangerous driving incidents you refer to. Grateful if you could detail them - and also the practical steps you feel Sainsburys could take to alleviate the problems. I'm happy then to talk them through with my dad and get his take on it.