Having endured militia attacks, weeks in hiding, an escape to a cold, distant country, years of peripatetic near-destitution and most recently a Christmas in detention, Adesole Adefowoju now faces a new problem: boredom.

At Yarl's Wood, the detention centre for asylum seekers near Bedford in the UK, the Nigerian 10-year-old spends her days in the same lessons as her sister, Deby, seven, and brother Dapo, six. "They give us multiplication and even the five-year-olds can do them," she sniffs.