This is in response to my previous question that was just answered (very promptly, thank you).
The metal isn't sticking out or anything; it is covered by the material but there just seems to be a gap between the back section and bottom section when it is laid completely flat resulting in a very hard part of the pram being where baby's back is.
A lot of reviews say comfortable padding this does not correspond with my experience. I will follow this up with Mamas and Papas.