Hi and Happy New Year!
To start the year well, here is a free module to take care of the particular management of orders for the United Kingdom following the Brexit.
You know, this principle of tax according to the value in pounds sterling of the order.
Presentation : https://www.prestatoolbox.com/free-prestashop-modules/447-free-module-for-the-brexit.html
Compatible : PrestaShop 1.6
Direct download : https://link.prestatoolbox.fr/medbrexitvatfree