And, I think it is fair to assume that there were in fact two separate Lab' files involving exhibits submitted by Essex police, at one time or another, One file under a case reference of '2464/84', and another, 'F/790/85', in connection with this police investigation...
This of course, is linked to the change in the investigation, for an original stance of the case being one of 'four murders, and a suicide' (SC/688/86), which altered into a case of 'five murders', on or about 6th September, 1985...
In other words, 'SC/688/85' and '2464/85', followed by 'SC/786/85' and 'F/790/85'...
This has created a deception so that the defence team, and the court which tried the matter, and the 2002 appellate court which rejected the appeal, could never get a definitive answer to matters of a scientific nature, it was always going to be a case of the prosecution and its expert witnesses, and Essex police, and the relatives, creating an atmosphere of confusion...