There is a simple answer to that one. We are part of a global family, whilst the under 18 year old’s who have crossed the channel are in our country, we look after them.
Whilst the landings are in Kent, it is Kent County Council that has the immediate responsibility, but understandably they can only take so many to give the care needed and have made a clear plea for help, last week https://kccmediahub.net/kent-leader-announces-we-cannot-safely-meet-our-statutory-duty-as-council-reaches-capacity-for-the-care-of-unaccompanied-asylum-seeking-children745
Child detention for immigration purposes ended during the Coaltion, it was a “red line” issue for the Lib Dems, and thousands of children were detained no more. Then in 2014 they fought for it to be enshrined in law that children should not be detained, and can no longer be, apart from a necessary 24 hours for initial health checking and safeguarding issues. It is crucial that they are not able to just go onto the streets of Dover where their smugglers or similar could be waiting for them, to use for exploitation and modern slavery.