Some questions in economics are hard. Some others, such as Brexit, are pretty easy: if you dramatically raise tariffs and non tariff barriers to trade with your neighbors, your welfare goes down.
Here, @johnvanreenen and co-authors got it essentially right in 2016.
RT @johnvanreenen: UK businesses struggle to trade with EU two years after Brexit deal https://www.ft.com/content/9d170855-ed29-49a5-8457-12e093c1dce2?desktop=true&segmentId=0e5502c2-a654-17b7-29eb-3bb1c22ff1ba#myft:notification:daily-empty-email:content Government knows this (as we predicted https://cepr.org/voxeu/columns/consequences-brexit-uk-trade-and-living-standards ) - time to be honest
🐦🔗: https://n.respublicae.eu/lugaricano/status/1607045077502664704