I loved this sentence: "When you've got a house full of kids to cook for and wash up after, having one you can feed lying on the sofa with your feet up and whose meal doesn't incur any clearing-up afterwards is always, in my book, a bit of a boon."
In the US the advice has been to wait until 6 months at least since my eldest was born 5 years ago. I didn't find it a problem to wait that long.
The bit about breastfed vs. formula babies confused me. Yes, of course, breastmilk is best, but formula is the closest thing you can get to breastmilk. So why would you need to add, for example, rice and apples to make the formula closer to the standard of breastmilk? Makes no sense. If anything, I would think it would be easier to wait longer with a formula fed baby, just because the formula takes longer to digest and they don't need to be fed as often.