Today's shop for the ever efficient Ms L has got me reaching for my old economics textbooks as to why Sainsbury's have stopped selling their fruit (apples, kiwis) in packs of four and replaced them with packs of six (with an associated increase in the overall pack prices...). Of course this also increases the possibility of wastage if you can't manage a six pack (as it were...).

Happily the friendly fruit and veg man outside Holborn station was as straightforward as ever - 3 pears for £1.20 or 4 for £1.60 thankfully didn't require much in the way of arithmetic gymnastics.