I think you already have a copy of Bertram's death certificate:
23 July 1964 at 9 Higher Henry Street, Hyde.
Age 71
Occupation Boiler Fireman (retired).
Cause of death: Diffuse Diopathic Fibrosis (Hamman-Rich Syndrome)
Informant: P Johnson, widow of deceased present at the death
However, I can't see a location for his burial/cremation from Tameside Council website.