Isa Dare, son of a jihadist from south London, appears in an Isis video in which he apparently blows up a car full of prisoners, earning him the nickname ‘Jihadi Junior’

A two-year-old boy who was taken to Syria to live under Isis has shown a marked interest in guns and “shooting people” on his return to Britain.

In the first chilling insight into the impact of the terrorist group on children coming back to the UK, social workers assessed that the boy gets “overexcited” by the mention of weapons and “runs around mimicking shooting”.

His case can be disclosed today as part of a Sunday Times investigation into British youngsters who have been exposed to extremism by their families.

Analysis of hundreds of pages of transcripts from a dozen cases heard by the secretive family courts relating to Syria will raise fears of a new “Generation Jihad” of radicalised children.

Shocking examples in the court