Unfortunately I don't have nice neighbours
If a delivery comes and just happens to knock on next door and they are in, then fine, but I couldn't specifically ask, and most people in my block are out during the morning anyway. Parcelforce have left it in the corridor outside my flat door before, which is good, but I can't specifically ask them to do that as I could be in trouble then for blocking the corridor.
The problem with leaving it anywhere really is the weight of the boxes when they contain cat litter and 30 tins of cat food! I can't lift them so like to be in when they come so that they can bring it in to the hallway for me. That's the reason why I can't collect it either. Even if someone puts it in the car for me, I still can't carry it from the car park to my flat.
I think I might just go with parcelforce and see what happens. If they leave it outside my door or with my neighbour then great. If not, then I'll just have to work something out. I do have a friend who might be able to take it (or leave instructions for it to be left in his porch). That is problematic in terms of me getting it here, but is a possibility for re-delivery during the week if all else fails.