Lucas's father Benjamin Stachursky, 33, said: "You just can't believe the amount of errors, the magnitude of errors and breaches of duty that were committed during the 24 hours we stayed at the Homerton."
The baby's mother, Anna Holzscheiter, also 33, is pregnant with her second child. The couple have returned home to Germany because, Ms Holzscheiter says, she does not trust the NHS. She told Channel 4 news "no one was familiar with prescribing or administering" the drug, phenytoin, to children.