I have built-up a large code library of useful functions and classes over the many years I have been programming. This page is a placeholder for some useful components I could release.
In the meantime, here is a quick and simple tool that was relevant for the UK in 2019.
UK Poll of Polls – 2019
A workbook tool that automatically refreshes, averages and charts Wikipedia polling data:

NB: If the data structure of the underlying Wikipedia page has changed since the last refresh date, then the workbook will need to be updated to reflect the change.