Wiltshire police investigating unspecified allegations against a paediatrician at Southampton General Hospital are seeking expert medical evidence outside the UK.

The case concerns a paediatrician who was involved in the care of a child whose mother was later charged with murder.

Marianne Williams, then 22, was charged in 2004 with the murder of her 15 month old son, Joshua Taylor, whom she was alleged to have poisoned with salt. She was found not guilty in October last year after a six week trial at Winchester Crown Court.

Wiltshire police officers are also under investigation for their role …