Does anyone know whether any central authoritative list is available, and if so from which public or private source, as to which original census records for England and Wales are not available because of loss or accidental destruction? I have enquired of the Brighton History Centre whether the missing Piece Number for the 1861 Brighton census is missing from the microfilm copy by accident or error, or whether the original documents are lost or destroyed. They do not know the answer, so perhaps SOG members will know whether any informed source exists, within or without the public sector. Thank you. Jim Halsey