You asked

Please provide the number of those affected by postpartum depression and the link between this and the admission of infants in NICU.

We said

Thank you for your enquiry.

Unfortunately we do not hold any data on the number of parents with postpartum depression, hospital treatment for newborn infants, or any links between them. You might be able to find relevant information from NHS Digital (https://digital.nhs.uk/) or from one of the charities dealing with mental health problems and/or parenting issues.