Just edited next weeks groceries because...

...we've now got me-friendly spread, so I've added on yoghurts for both of us instead, so the total for next weeks groceries now look like this:

My stuff:  £7.57
Steve's stuff:  £17.34
Joint stuff:  £18.93

So it doesn't look as evenly distributed as it was first thing, but Steve's stuff isn't the most expensive by about £1.50 now, so that's still a relief for me, I would just have preferred for him to take his own stuff off for his yoghurts instead of more than half of the saved £2.25 being only suitable for him again.