I am working on a UK postcode map. It only has the first bit of the postcode, e.g. BR12. I have an excel spreadsheet with the longitude/latitude of specific points as well as their postcodes. Instead of plotting points I'd like to colour the postcode in which they are located.
Manually selecting the postcodes to colour would be a huge waste of time. Has anyone got a suggestion on how to proceed?
As per @Jospeh's suggestion, I have decided to go for the Rule-Based option on my .shp -however I don't understand how to add a rule as proposed below.