Hi,
just came to post this and saw the thread about the Cosatto cot. 
But anyway - as much as it might look like I'm being a copycat
I will go ahead with this post, as it might prevent someone's child being hurt.
I got a second hand Anna glider crib like this last summer when I was still pregnant.
Took it home, assembled the top bit to the stand. Ds2 asked if he could have a wee go in it, I said Ok, he put one foot in it and the base fell out.
Basically it has a hardboard base which slides into two grooves along the sides, and it is not, on ours, quite wide enough so that when it inevitably shifts slightly to one side, the edges remain safely in the grooves - the ede of ours just came out at one side, and then the rest of the base followed.
Luckily no one was injured but I have reported it to John Lewis who say they will investigate.
I don't know how to make ours safe, still working on that - but as I got it second hand there's not much I can do.
So if you have one please, please do check that you can't wiggle the base board too far to one side, making it potentially really dangerous for babies.
Hopefully it was just a one off manufacturing issue but I cannot see anything actually wrong with it, to indicate damage - so I think it came like this.
thanks for reading.