How can I see which investments are in the fund?

You can find a list of investments that make up a fund on the Fund Analysis tab of the information page. 

These are only usually the top 10 holdings, as managers tend not to share more for competitive reasons, but you can still see the different sectors in which the fund invests. 

You can also read more details about how the fund works, including expected risk and ongoing charges, by downloading the Key Features.