I'm trying to change "Excl. Tax:" to "Excl. Vat:" and have created a CSV file called en_GB.csv which contains the line - "Tax:", "Vat:".
I've saved and uploaded this to app/design/frontend/Magento/luma/i18n/en_GB.csv.
The translation hasn't worked as my store still shows "Excl. Tax".
I've deployed static files and run the upgrade command too.
Not too sure what to try next?