Those from UK should hurry up to buy citrus trees from the rest of Europe as beginning from 2021 it would be very hard and expensive to get any plants from EU.
Exporting plants and plant products
From 1 January 2021, EU exports of plants, fruit and vegetables to Great Britain must comply with new Phytosanitary requirements, including phytosanitary certificates. If you export plants, fruit and vegetables to Great Britain, you should:
*check whether a phytosanitary certificate (PC) is required by contacting the plant health authority in your country or your local plant health inspector
*check if your plants require laboratory testing of samples to ensure they are free from pests and diseases or inspections during the growing season
*apply for a PC from the relevant National Plant Protection Organisation before export