Sorry to be a nit picker, but as a picker of nits, Maltby only made No4 rifles. The No5 was a BSA and Faz only rifle.
Yes, I should have been a bit more specific; The post was more of a generalized blanket statement.
The No. 4s were made at all three facilities, while the No. 5s were only produced at Fazakerly and Shirley.