"The Children's Commissioner for England has expressed concern over claims that children of asylum seekers, some as young as eight years old, were being transported in "caged" vans.

"MDDUS advises that GPs should not police access to NHS healthcare for failed asylum seekers and other vulnerable migrants.

"More than 66,000 people, including failed asylum seekers, illegal immigrants and foreign criminals, were removed from the UK or left voluntarily last year, according to Home Office statistics.