[2][3] Hall is emeritus professor of community paediatrics at the Institute of General Practice and Primary Care, University of Sheffield.
[2] Hall studied medicine at St George's Hospital and the University of London graduating with a Gold medal and qualifying in 1969.
They contributed to establishing a Master's degree in paediatric public health [2] and supported a rural pre-school literacy programme.
Upon returning to the UK, Hall took a position as a paediatric audiologist at the Royal National Throat, Nose and Ear Hospital.
[2] At Baragwanath Hospital, Hall studied paediatrics, neonatology as well as Pediatric Neurology and this set his career specialism in place, with an interest in childhood disability.
[2] When Hall returned to the UK, he obtained a position at the Charing Cross Hospital as a senior registrar in child development.
While at Sheffield, Hall developed, with colleagues, a Master's degree programme for neurodisability, advanced education standards for paediatricians, worked as an investigator on the National Evaluation of the Sure Start campaign[5] as well as consult on Scoliosis and adolescence for the Department of Health and Social Care.
[3] In June 2006, Hall acting within a group of 30 leading scientists, including child health experts, wrote an open letter to the UK Government, and the people of the United Kingdom, in an effort to close the autism and MMR vaccine controversy.
Hall advanced the idea that there was a strong association between development problems at school entry and well understood parent and family risks to health.
The results of the first working party in 1989, was a report, in which the group found there was a complete lack of evidence on the history of development problems in children, and the current reliability of screening tests.