It is better to kept all master documents ( Ex: BMR,BPR,Specifications,test procedurs) for 7 years, asper MHRA guidelines,also MHRA stress on retrival of obsolute documents from respective dept. and destruction of the same and also approval should be taken from QA head.
First thing is that MHRA has no guideline on GDP, yes it has one guideline on “Good Laboratory Practice Guidance on Archiving” that is about The archiving of study materials and test facility records, its storage and retention. I have read the guideline thoroughly but i didnt find a 7 years fixed retention period for above stated documents. In fact it uses the term “specified retention period”, Anyways if u could give us a valid reference and a phrase from that guideline, it would be a great help for all, in updating the system.