I am genuinely puzzled by the idea that people need to see formula advertisements to 'know what is out there'. There are no restrictions on the sale of infant formula. Anyone can go into any large supermarket and see, instantly, what is out there.
In fact, here is my handy cut out and keep guide for anyone who doesn't know what is out there and wants to know without going into a supermarket.
The most widely available brands of bog-standard infant formula in the UK are :
Hipp Organic
Cow & Gate
SMA
Heinz Nurture
Aptamil
Some of them have prettier boxes and snazzier logos and slicker slogans.
None of their advertisements or other marketing tells you anything beyond that.
HVs and midwives should know, and should tell you freely, other stuff, but there is a limit because there are no independent comparisons between infant formulas. Most brands of formula resemble other brands - there is really very little difference in formulation and indeed there is not allowed to be - all infant formula has to adhere to legal requirements of content.
So you need infant formula in an emergency at, say, 3 am, and someone is dispatched to the all-night store to fetch some. How will a memory of advertising help him/her discrimintate and select the 'right' one?