No, that's a No 1. The differnces are obvious when seen side by side. I'll try to get some photos and post them. The No 1 was the empire's battle rifle from pre WWl and was made in Australia (Lithgow) and India (Ishapore) as well as Britain.
U.K. replaced it with the No 4 circa 1938 and they were made in the US (Savage) and Canada (Long Branch) as well as England.
However the Aust and Indian arsenals continued producing the No 1s thru WW2 to equip their troops.

One note: Magazines are NOT interchangeable between the 2.

SOS