It is believed the boy hit by an ambulance in Bath is 14-years-old.
He is in a serious condition after suffering a "significant" head injury.
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Speaking exclusively to ITV News, the man said he wanted to be able to return to the UK without the threat of prosecution.
A rather cloudy night is in store across the UK, with showers coming in off the North Sea coast.
A growing number of parents are fleeing to Ireland from England and Wales, where their children are being threatened with forced adoption.