Expert evidence: need for personal examination
The fact that a witness who gives an opinion has not examined, or even seen, the claimant does not render the evidence inadmissible. It is, though, relevant to the value that the tribunal may give to the evidence. In Re W (Care: Threshold of Criteria)  2 F.L.R. 98; Pinfold & Anor v R  EWCA Crim 3643;  UKSSCSC CDLA_2466_2007.
4th Edition » | Chapter 12