I find the service overall very good. It would be helpful to have some idea of where on in the time slot the lorry will arrive as a few times it has either been early or right at the end of the slot and when off to work this is tricky to manage. (eg would like to have a shower, but can't until the shopping has arrived)
I would prefer a later time to be able to adjust the order by as 5:10 is not as easy to check for the next day as it was previously later at 6:10pm. This made it much easier to make the final adjustments needed when home from work rather than on the fly trying to remember the fridge contents.