The FA 2018 lecture is used.
The differences between the FA 2018 Study Notes used in the lecture and those you are using for FA 2019 are as follows:
Examples 1 – 3 – changes in date of acquisition and or disposal of assets but no change in answer as it is the same indexation factor used from date of acquisition to December 2017
Example 3: the date of the indexation factor should read April 1997 to May 2013