Thanks everyone and in particular Flygirl.

The trouble with turbulence is that one may not always get enough warning and time to secure the baby. I had in mind some sort of system that restrained the baby well at all times.

I just was just discussing this issue with my wife and she made mention of a baby carrier (as she described it) which is some sort of fabric pouch which holds the baby to you.

This would probably be ok as in a sudden bit of turbulence the holder of the baby could instantly clutch the baby providing additional security.

Seems to me to be an area that the airlines could do a little more more investigation into in the interests of passenger safety.

cheers Peter