There has been an open data initiative in the UK since 2010 when data.gov.uk was created. After 9 years we now have a huge amount of browseable datasets on the website that can be downloaded and used for your own analysis.
One of the larger data sets available on data.gov.uk is the GP Practice prescription data coming in at around 10 million rows of data every month. This is a lot of data for your average spreadsheet to handle, so this is where tools like Pandas comes in. Pandas is a data analysis library for python that can handle many millions of rows of data and run statistical analysis on them to try and extract useful information.