Well Huggies Customer Service couldn't have been more helpful, they were brilliant Not only were they super apologetic and determined to get to the bottom of the issue, they're sending me two boxes of nappies free! It looks like I got a dud box of nappies when we switched to Walkers. The nappies have a code printed on the tabs so they can tell which machine made them and possibly which batch. They're sending me a prepaid envelope to send them a few samples of the duds and they'll investigate it and get back to me

After I spoke to Huggies yesterday, I dug through our nappy stash and found some with different codes. They actually seem slightly thicker and fluffier than the duds. I tried one on DD2 overnight and wouldn't you know it, she stayed dry