So, I'm not going to be finished tomorrow - thanks to bloody Wickes.
After having kicked up a royal fuss about them saying they wouldn't deliver the slate chippings on Friday, they promised that they would do so today, sometime between 10am and 4pm.
DH were in all day and no-one came.
According to Wickes, when I called them up at 4.15pm, the driver had been but "he knocked but there was no-one at home" so he couldn't deliver.
OK, DH and I were out in the garden all day but our door knocker basically has the living room as a soundbox and we can clearly hear the door knocker even at the end of the garden. Neither of us heard anyone knocking.
I got a missed call on my phone (assuming this was the delivery driver - neither of us heard it ring) but there was no voicemail and when I called the number back about 20 mins later, it went straight to voicemail. At the time of the missed call DH was painting the raised beds, so was in clear sight of the road down our side passage. No-one walked the 20 yards down this passage to see if there was anyone in the garden.
We live on a one-way street, so the driver would have had to go up the road and turn round and come back again, or used our neighbour's drive to turn. As I was expecting the delivery, I took a look every time I heard a diesel engine. I saw nothing. There was definitely no sound of a lorry stopping outside or turning.
I do actually doubt whether anyone did try to make the delivery.
I have to say that the manager of the store from which the delivery was supposed to come today (not the horrible one at the store where I placed the order) was very apologetic and did try to get in contact with one of the drivers still on the road to see if he could do the delivery, but didn't manage to do so.
I am really gutted that I won't be finished tomorrow. 
I am not going to put any pictures up of today's efforts as the garden is all but finished. Just a couple of planters and plants to go in place once the weed-proof membrane and slate is down.