“a) the person, institution or other body having the care of the person of the child … had consented to … the removal or retention.”
“b) there is a grave risk that his or her return would expose the child to physical or psychological harm or otherwise place the child in an intolerable situation.”
‘Second, the risk to the child must be “grave”. It is not enough, as it is in other contexts such as asylum, that the risk be “real”. It must have reached such a level of seriousness as to be characterised as “grave”. Although “grave” characterises the risk rather than the harm, there is in ordinary language a link between the two. Thus a relatively low risk of death or really serious injury might properly be qualified as “grave” while a higher level of risk might be required for other less serious forms of harm.’
“… if it is established that adequate arrangements have been made to secure the protection of the child after his [or her] return.”