Try this:
SELECT tblInvestigations.[No], tblInvestigations.[Date Logged], tblInvestigations.Investigator, tblInvestigations.Section, tblInvestigations.Source, tblInvestigations.Method, tblInvestigations.Ref1, tblInvestigations.Ref2, tblInvestigations.Issue, tblInvestigations.[Root Cause]...