the infant hand baggage is really at the discretion of the check in agent, most would turn a blind eye to a small bag with baby stuff in.

Liquid restrictions still stand at the same level as they have since 2006.

No liquids over 100ml, even if its a 200ml bottle half full the container must be marked 100ml or less.

no restriction on powdered milk.

As for made up milk in bottles if i remember correctly as long as you taste it they security will normally allow you through with it, best though to confirm this with your local airport and i mean airport not airline.