Don’t worry, after Jan 1st 2021, shopping on Wish will still run smoothly!
Beginning January 1st, 2021, the current VAT exemption for UK imports of goods of value up to £15 will end. For orders made on and after January 1st, VAT will be included in your purchase price on items of up to £135 imported into the UK. This also means that you will not have to pay any additional VAT at customs.
You can learn more about the new VAT changes here.