UK
In the United Kingdom, customs duty is charged for shipments valued over £135, and the rate for green tea is 3.2%, black tea 0%.
https://www.gov.uk/goods-sent-from-abroad/tax-and-duty
VAT - VAT must be paid for shipments above £15 in value including shipping. This threshold may be removed starting 1 Jan, 2021z VAT in the UK is 20% but should be zero for tea according to:
https://www.gov.uk/guidance/food-products-and-vat-notice-70114#general-food-products