I can only find episode 1 and 2 on Youtube, but not episode 3 (with the help of the comment section).
BBC Empire of the Tsars Romanov Russia: Reinventing Russia (Part 1 of 3)
BBC Empire of the Tsars Romanov Russia: Age of Extremes (Part 2 of 3)
For episode 3 (The Road to Revolution), I found it on BitChute
From the BBC website, with three episodes: https://www.bbc.co.uk/programmes/b06...pisodes/player